A square with an area of 81 cm^2 is rotated to form a cylinder. What is the height of the cylinder?

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asked Apr 15, 2018 191k views

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Nepete · Answer 1 · 2018-04-21T21:40:21+0000

The area of a square is just:

A=s^2 so

s^2=81

s=9 so if this square is rotated about its center you will get a cylinder with a radius of 4.5 cm and a height of 9 cm.

So the height is 9 cm

A square with an area of 81 cm^2 is rotated to form a cylinder. What is the height of the cylinder?

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