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McGraw Hill Integrated II, 2012 View details

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Exercise 20 Page 873

Use the formula for the volume of a cylinder.

≈ 7 cm

Practice makes perfect

Consider the given solid.

The given solid is a cylinder. The volume of a cylinder with the radius r and height h can be calculated by the following formula. V=π r^2 h We are given that the volume of the cylinder is 770 cubic centimeters. The height is 5 centimeters. Let's substitute these values into the formula and solve for r^2.

V=π r^2 h

SubstituteII

V= 770, h= 5

770=π r^2 ( 5)

▼

Solve for r^2

RearrangeEqn

Rearrange equation

π r^2(5)=770

CommutativePropMult

Commutative Property of Multiplication

5π r^2=770