A cylinder has a surface area of about 221.1 square meters and a height of
7.8 meters. What is the approximate radius of the cylinder?
OA. 3.2 meters
OB. 4.5 meters
OC. 2.1 meters
OD. 6.4 meters

A Cylinder Has A Surface Area Of About 221.1 Square Meters And A Height Of7.8 Meters. What Is The Approximate

Answers

Answer 1

The approximate radius of the cylinder  is 4.5m

Surface area of cylinder

The formula for calculating the surface area of cylinder is expressed as:

SA = 2πr(r+h)

where

r is the radius

h is the height

Given the following parameters

SA = 221.1 square meters

height = 7.8m

Substitute

221.1= 2(3.14)r(r+7.8)

221.1 = 6.28r^2 + 15.6r

Factorize to have

6.28r^2 + 15.6r - 221.6 = 0

On factoring, the value of the radius is 4.5 meters

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Answer 2

Answer:

the answer is A

Step-by-step explanation:

I hope it helps you


Related Questions

(-4,5) is translated by the vector (-1/10). What coordinate would it be at?

Answers

The coordinates of the image of the point (- 4, 5) is (- 5, 15).

What is the image of a coordinate by using a translation?

In this question we find the coordinates of the original point and the translation vector. Please notice that translations are examples of rigid transformations, meaning that Euclidean distance is conserved in the resulting image. A translation can be done by the following formula:

P'(x, y) = P(x, y) + T(x, y)

Where:

P(x, y) - Original pointT(x, y) - Translation vectorP'(x, y) - Resulting point

If we know that P(x, y) = (- 4, 5) and T(x, y) = (- 1, 10), then the resulting point is:

P'(x, y) = (- 4, 5) + (- 1, 10)

P'(x, y) = (- 5, 15)

Remark

There is a typing mistake in the statement. Correct form is shown below:

(- 4, 5) is translated by the vector (- 1, 10). What coordinate would it be at?

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TR= 3x + 5, and RA = x + 17. Find the value of x.

Answers

Greetings from Brasil...

The small green lines on the line segments indicate that TR = RA, as well as the small red lines indicate that MR = RH, then

TR = RA

3X + 5 = X + 17

X = 6

How do I solve x for 2x+8=3x+10

Answers

Explanation:

To solve for x in: [tex]2x + 8 = 3x + 10[/tex]

Collect like terms

[tex]→8 - 10 = 3x - 2x \\ - 2 = x[/tex]

Therefore:

[tex]x = - 2[/tex]

Round off 28.964 to the nearest tenths

Answers

Answer:

Its 29.000Step-by-step explanation:

Since we need to Round the Nearest Tenths, First we need to find what is the thenths.

So the order of numbers are

Hundreds - Tens - Ones - . - Tenths - hundreths

So tenths is the digit after the decimal Dot

When we convert .964 to the nearest tens

since there is .064, the number will be greater than .964

so the rounded number will be 1.000

we did this with only .964m but when we add 28.964 then the answer will be

28.000 = 1.000 - 29.000

Hope U will be clear

Pls Mark Brainliest

Need the answer asap
Pls answer it correctly

Answers

Answer:

I will be your human calculator! top to bottom!

1. (+1)     5. (+28)  9. (+8)

2. (+4)    6. (+3)   10. (-5)

3. (+14)   7. (+24) 11. (+6)

4. (-3)      8. (-3)     12. (+1)!    Good Luck!

Please help quickly!!!!
-3/5 - (-2/5) =
Write the answer as a fraction

Answers

Answer:

-1/5

Step-by-step explanation:

Minus a negative is plus.

-3/5 - (-2/5) =

= -3/5 + 2/5

= -1/5

D - 8 over -2 = 12 solve for D

Answers

Answer: D = -6

Step-by-step explanation:

[tex]\frac{D-8}{-2} =12[/tex]  

1) Divide both sides by -2

[tex]D - 8=-6[/tex]

2) Add 8 to both sides

[tex]D=-6[/tex]

can u pls help me with my ixl :)

Answers

The slope is -9. The formula y=Mx+b can be utilized to solve slope

pls help u with these to ​

Answers

Answer:

5 acute

6 acute

3 obtuse

4 obtuse

Step-by-step explanation:

Hope this helps

What is the quotient of 204 decided by 34

Answers

Answer:

204 ÷ 34 = 6

Step-by-step explanation:

204 ÷ 34 = 6

Check:

34

x 6

------

204

hope this helps :)

Answer : 6

Explanation :

34 + 34
68
68 + 34
102
102 + 34
136
136 + 34
170
170 + 34
204

OR just simply use Multiplication
34 x 6

−5(−x−1)+4x−1= 49 solve for x

Answers

-5(-x-1) + 4x -1 = 49
5x+5 + 4x -1 = 49
9x + 4 = 49 subtract 4 from both sides
9x = 45
x = 5
Plug in 5 for x
-5(-5-1) + 4(5) -1 = 49
-5(-6) + -20-1 = 49
30 + 19 = 49
49=49
So x = 5

The answer is x=5.

Explain the properties used to solve inequalities and how they are different from properties of equality

Answers

The major difference between inequality and equality is that equality represents a particular value(s) while inequality represents a range of values that are in a specific direction.

What are the properties that are used to solve inequalities?

This must be noted when solving questions on equality and inequality.

For example:

x  =  a means that the value of x is a. It represents a particular value which is a

x  <  a represents all the values  that are less than a.

x  ≤ a  represents values from a and below.

x  >  a represents all the values that are greater than a

x ≥ a means that the values of x are greater than or equal to a.

From the examples given above, it is obvious that a change in the direction of the inequality sign changes the values of the data represented by the inequality.

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The gardening store sells clay flower pots, which hold 8 litres of dirt, and ceramic flower pots, which hold 9 litres. Billy bought 8 flower pots, which will hold a total of 67 litres of dirt. How many of each type of flower pot did he buy?

Answers

According to the given statement;

Billy bought 8 flower pots, which will hold a total of 67 litres of dirt. The flower pot Billy  bought his flower pot is x=5.

What is one variable equation?

The linear equations in one variable is an equation which is expressed in the form of ax+b = 0, where a and b are two integers, and x is a variable and has only one solution.

For example, 2x+3=8 is a linear equation having a single variable in it.

What is a linear equation in math?A linear equation only has one or two variables. No variable in a linear equation is raised to a power greater than 1 or used as the denominator of a fraction.

According to given value ;

    Let x = number of clay pots. Since Billy bought 8 pots in total , the                    number of ceramic pots Billy bought is 8-x

    67 =(8 litre )*(x clay pots)+(9 litres)*(8-x);

By solving one variable equation;

       67=8x+72-9x

       67=(-x)+72

      -x =(-72+67)

      ( -x) = -5

         x =5

Hence 8 litre of dirt clay pots is 5 then 9 litres of ceramic flower pot is is 3.

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the stock maeket fell 60 points over a period of four days. What was the average change in the stock market each day

Answers

Answer:

15 points

Step-by-step explanation:

It's 60 points over 4 days. We can divide 60 by 4, which is

15

Simplify this expression.
9y + 3 - 4y + x +9

Answers

Answer: 5y + x + 12

Step-by-step explanation:

9y + 3 - 4y + x + 9

Group together 9y and -4y

5y + 3 + x +9

Group together 3 + 9

5y + 12 + x

Reorder the expression.

5y + x + 12

The number line represents −412+314.
What is the sum?

Answers

-98

-412
314
____
-98


____

Answer:

-98

Step-by-step explanation:

-412 + 314 = 314 -412

= -98

Tip:

Write the opposite symbol in the equation, then in the answer, write the opposite symbol

Just do 412 - 314

which is 98

opposite of 98 is -98

Answer is -98

6 1/2 to quarts to cups

Answers

Answer:

26 cups

Step-by-step explanation:

1 quart = 4 cups

6 quarts x 4 cups =  24 cups

1/2 a quart = 2 cups

24+2= 26

Answer:

12

Step-by-step explanation:

not even an actual assignment question, just wanted to ask, how are you?

Answers

Answer:

Im sleepy. How are you?

Answer:

oh thx im good how are you

Step-by-step explanation:

What is the equation of the line that passes through the point (-3, 1) and has a slope
of -1/3?

Answers

Answer:

y=-1/3x+1

Step-by-step explanation:

Slope-Intercept Form: y=mx+b

m is the slope

b is the y-intercept

In the given statement it tells us the point is (-3,1).

-3 is the x-intercept while 1 is the y-intercept

In the given statement it tells us the slope is -1/3

Plug in the m for -1/3 and the b for 1

y=-1/3x+1

Hope this helps.

y=-1/3x+1 is going to be your correct answer

solve the equation for x if 2 to the power x = 8​

Answers

Answer:

x=3

Step-by-step explanation:

solve the equation for x if 2 to the power x = 8​

2^x = 8

log(2x)=log(8)

x*log(2)=log(8)

x=((log(8))/((log(2))

x=3

----------------------------

check

2^3 = 8

2 * 2 * 2 = 8

8 = 8

the answer is good

Write the terminology for the power of a factored expression of a polynomial
function.

Answers

Answer:

a power function is a function with a single term that is the prudoct of a real number

a data set includes the following numbers: nineteen over 4, two and one fifth, 85%, and 3.24. part a: what is the order of the numbers from least to greatest?

Answers

The order of the numbers from least to greatest is:

 85% < Two and one fifth < 3.24 < Nineteen over 4

The given data set of numbers are: nineteen over 4, two and one fifth, 85%, and 3.24

In order to compare these numbers, we will change all of them into float (decimal) format.

nineteen over 4 = 19/4 = 4.75

two and one fifth = 2 [tex]\frac{1}{5}[/tex] = 11/5 = 2.2

85% = 85/100 = 0.85

And 3.24 are the numbers set.

Now the order of numbers from least to greatest is clear.

Since 0.85 < 2.2 < 3.24 < 4.75, we can conclude

   85% < 2 [tex]\frac{1}{5}[/tex] < 3.24 < 19/4

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use the space provided to create a list of important talent, skills and competencies a person will need to fill the position on (business functions on ) purchasing​

Answers

There is space to identify the important talents, abilities, and competencies a person will need because every company aims to attain financial stability by streamlining its operations using resources.

A stable economy is what?

Every firm strives to achieve financial stability by streamlining its operations with resources, thus there is room available to identify the critical talents, abilities, and competencies a person will require.

What is financial stability?"A state in which the financial system is not unstable" is the definition of financial stability. It may also refer to a state of stability among the three elements of the financial system, namely the infrastructure, markets, and institutions.The phrase "stability of financial institutions" refers to the degree to which each financial institution is sound enough to effectively perform the function of financial intermediation.

Due to the advancement of financial deregulation, many nations around the world have experienced the benefits of rapid financial industry growth since the 1980s.

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la tarifa de un recorrido de taxi es de 7.25 de cargo fijo y de 7 por cada km recorrido determina la ecuación si p corresponde al valor del pago por x km recorridos

Answers

The equation that illustrates the amount to be paid for the number of kilometers will be 7.25 + 7x.

How to illustrate the information?

Fixed rate for taxi = 7.25

Additional charges per kilometers = 7

Number of kilometers = x

Therefore, the equation that illustrates the amount to be paid for the number of kilometers will be:

= 7.25 + (7 × x)

= 7.25 + 7x

Therefore, the equation is 7.25 + 7x.

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Which statement is true when comparing how a student would complete the solution for the linear equation -2x + 3 = 6 to how the student would complete the solution for the linear inequality -2x + 3 < 6?
Completing the solution for the equation is the same as completing the solution for the inequality. The student would divide both sides by -2 in either case.
Completing the solution for the equation is the same as completing the solution for the inequality. The student would divide both sides by -2 in either case.
Completing the solution for the equation is the same as completing the solution for the inequality. The student would multiply both sides by -2 in either case.
Completing the solution for the equation is the same as completing the solution for the inequality. The student would multiply both sides by -2 in either case.
Completing the solution for the equation is not the same as completing the solution for the inequality. The student would divide by -2 to complete the solution for the equation and would divide by -2 and change the less than sign for the inequality to greater than.
Completing the solution for the equation is not the same as completing the solution for the inequality. The student would divide by -2 to complete the solution for the equation and would divide by -2 and change the less than sign for the inequality to greater than.
Completing the solution for the equation is not the same as completing the solution for the inequality. The student would multiply by -2 to complete the solution for the equation and would multiply by -2 and change the less than sign for the inequality to greater than.

Answers

The statement that is true is completing the solution for the equation is the same as completing the solution for the inequality. The student would divide both sides by -2 in either case. Option A

How to determine the statement

From the information given, we have that;

The linear equation is ;

-2x + 3 = 6

Let's solve for x

First, collect like terms

-2x = 6 - 3

-2x = 3

Divide both sides by - 2

x = 3/ -2

The linear inequality is;

-2x + 3 < 6

collect like terms

-2x < 6 - 3

Make 'x' the subject by dividing both sides by -2

-2x/ -2 = 3/ -2

x = 3/ -2

We can see that the linear equation and the linear inequality have the same solution and steps.

Thus, the statement that is true is completing the solution for the equation is the same as completing the solution for the inequality. The student would divide both sides by -2 in either case. Option A

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dark city had a population of 350,000 in 1990, and has increased exponentially since then, to 475,000 in 2008. project the population in 2015.

Answers

The population of the dark city in 2015 will be 449,245.

What is an exponent?

Let a be the initial value and x be the power of the exponent function and b be the increasing factor.

The exponent is given as

y = a(b)ˣ

The dark city had a population of 350,000 in 1990 and has increased exponentially since then, to 475,000 in 2008. Then the equation will be

350,000 = a(b)      ...1

475,000 = a(b)¹⁸      ...2

From equations 1 and 2, then we have

475,000 / 350,000 = b¹⁷

b = 1.018

Then the value of the variable a will be

350,000 = 1.018a

a = 343768.87

Then the equation will be

y = 343,768.87 (1.018)ˣ

The population in 2015 will be

y = 343,768.87 (1.018)¹⁵

y = 343,768.87 x 1.3068

y = 449,245

The population of the dark city in 2015 will be 449,245.

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a unicorn is tethered by a 20-foot silver rope to the base of a magician's cylindrical tower whose radius is 8 feet. the rope is attached to the tower at ground level and to the unicorn at a height of 4 feet. the unicorn has pulled the rope taut, the end of the rope is 4 feet from the nearest point on the tower, and the length of the rope that is touching the tower is $\frac{a - \sqrt{b}}{c}$ feet, where $a$, $b$, and $c$ are positive integers, and $c$ is prime. find $a b c$.

Answers

The values of a=60, b=750, c=3, a+b+c= 813 as determined by Pythagorean Theorem..

What is Pythagorean Theorem?

A geometric theorem states that the square of a right triangle's hypotenuse equals the sum of the squares of its other two sides.

Call the circle's center O, the unicorn's tether point A, and the final spot where the rope reaches tower B. Triangle OAB is a right triangle since BA is a tangent line at point B and OB is a radius. We determine the horizontal component of AB has length [tex]4\sqrt{5}[/tex] using the Pythagorean Theorem.

The cylinder is "unrolled" to become a flat surface. Let C be the rope's bottom tether, D the point below A on the ground, and E the point directly beneath B. Triangles CDA and CEB share characteristics of right triangles. The Pythagorean Theorem states that CD=8cdotsqrt6.

Let x represent the size of CB.[tex]CD=8\cdot\sqrt{6}[/tex]

[tex]\[\frac{CA}{CD}=\frac{CB}{CE}\implies \frac{20}{8\sqrt{6}}=\frac{x}{8\sqrt{6}-4\sqrt{5}}\implies x=\frac{60-\sqrt{750}}{3}\][/tex]

Therefore,

a=60, b=750, c=3,a+b+c= 813 as determined by Pythagorean Theorem.

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In any circle the ratio of circumference to diameter is constant and is approximately equal to 22:7. what is the circumference of a circle if its diameter is 60 in?

Answers

Answer:
220/7
Step-by-step explanation:
circumstance/diameter = 22/7
circumstance = diameter * 22/7
=10 * 22/7 = 220/7 (inches)

Answer:

188.57 in

Step-by-step explanation:

Circumference = 2πr = 2πd/2 = πd

[tex] = \frac{22}{7} \times 60 \: in[/tex]

= 188.57 in ( approx.)

A sequence is ____ while a series is ______. A series is definite if_________, it is infinite if ________.

Answers

Answer: A sequence is a enumerated collection of objects in which repetitions are allowed/order matters while a series is a infinite series. A series is definite if its based on the concept of sequences.

A series could be finite or infinite because its mainly  often represented in compact form which is also known as a  sigma notation(∑)to indicate the summation involved. infinite series is the sum of an infinite sequence.

Step-by-step explanation:

If h(x)= -5/6x + 7/8 find the following values. Simplify your answer.

H(3)=
H(4)=
H(-1/2)=

Answers

If [tex]h(x)=\frac{-5}{6} x+\frac{7}{8}[/tex]  then the value of h(3) = -13/8  , h(4) = -59/24 ,  h(-1/2) = 31/24 .

In the question , the equation is given as

[tex]h(x)=\frac{-5}{6} x+\frac{7}{8}[/tex]      ....(i)

Part(a)

To find the value of h(3)

we substitute the value of x=3 .

On substituting the value of x=3 in equation (i),

we get ,

h(3) = (-5/6)3+7/8

= -15/6+7/8

taking LCM of 6 and 8 as 24, we get

= -60/24 + 21/24

= (-60+21)/24

= -39/24

Writing in the simplest form we get

= -13/8

so, the value of h(3)= -13/8 .

Part(b)

for h(4) ,we substitute the value of x=4 .

On substituting the value of x=4 in equation (i) ,

we get ,

h(4) = (-5/6)4+7/8

= -20/6+7/8

taking LCM of 6 and 8 as 24, we get

= -80/24 + 21/24

= (-80+21)/24

= -59/24

so , the value of h(4)= -59/24 .

Part(c)

for h(-1/2) ,we substitute the value of x as -1/2 .

On substituting the value of x = -1/2 in equation (i) ,

we get ,

[tex]h(\frac{-1}{2} )=\frac{-5}{6} *\frac{-1}{2} +\frac{7}{8}[/tex]

= 5/12 +7/8

taking LCM of 12 and 8 as 24, we get

= 10/24 + 21/24

= (10+21)/24

= 31/24

so , the value of h(-1/2)= 31/24 .

Therefore , if h(x) = (-5/6)x+7/8 the the value of h(3)= -13/8  , h(4)= -59/24 and h(-1/2)= 31/24 .

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