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Big Ideas Math: Modeling Real Life, Grade 8 View details

Chapter Review

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Exercise 7 Page 456

Use the formula for the volume of a cone.

804.2 m^2

Practice makes perfect

The given solid is a cone.

We can calculate the volume of a cone with the radius r and height h using the following formula. V= 13π r^2 h We are given that the height of the cone is 12 meters and the radius of the base is 8 meters. Let's substitute these values into the formula and calculate the volume.

V=1/3π r^2 h

SubstituteII

r= 8, h= 12

V=1/3π ( 8)^2 ( 12)

▼

Simplify right-hand side

CalcPow

Calculate power

V=1/3π(64)(12)

Multiply

V=1/3π(768)

MoveRightFacToNumOne