a cylinder with the height of 5 inches has the volume of 45 pi square inches. what is the radius?

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a cylinder with the height of 5 inches has the volume of 45 pi square inches. what is the radius?

Guest Mar 19, 2015

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Best Answer

+130516

+5

{The volume has to be in cubic, not square, inches }

So we have

45 pi = pi (5)(r^2) divide both sides by pi

45 = 5 r^2 divide by 5

9= r^2 take the square root of both sides

3 = r

CPhill Mar 19, 2015

1⁺⁰ Answers

+130516

+5

Best Answer

{The volume has to be in cubic, not square, inches }

So we have

45 pi = pi (5)(r^2) divide both sides by pi

45 = 5 r^2 divide by 5

9= r^2 take the square root of both sides

3 = r

CPhill Mar 19, 2015

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