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

Chapter Review

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Exercise 8 Page 456

Use the formula for the volume of a cone.

41.9 cm^3

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 10 centimeters and that the diameter of the base is 4 centimeters. Let's find the radius of the cone by dividing the diameter by 2. r=4/2= 2 Now we can substitute these values into the formula and calculate the volume.

V=1/3π r^2 h

SubstituteII

r= 2, h= 10

V=1/3π ( 2)^2 ( 10)

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Simplify right-hand side

CalcPow

Calculate power

V=1/3π(4)(10)

Multiply

V=1/3π(40)

MoveRightFacToNumOne