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The volume V of a cylindrical can is represented by the formula V=πr2h, where h is the height and r is the radius. A cylindrical can has a volume of 1089π cubic centimeters and a height of 9 centimeters. What is the radius of the can?

Guest Apr 27, 2017
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V = pi·r2·h

                                                             1089pi  =  pi·r2·9

Divide both sides by pi:                        1089  =  r2·9

Divide both sides by 9:                           121  =  r2

Find the square root of both sides:          11  =  r

geno3141  Apr 27, 2017

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