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Glencoe Math: Course 3, Volume 2 View details

3. Volume of Spheres

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Exercise 38 Page 612

Use the formulas for the volume of a cone.

about 452.4 cm^3

Practice makes perfect

The given solid is a cone.

To find the volume, we can use the formula for the volume of a cone. V= 13π r^2 h Here, r is the radius and h is the height of the cone. In the diagram we can see that the height of the cone is 15cm. and the diameter is 12cm Therefore, the radius is 12÷ 2= 6cm. Let's substitute these values into the formula and calculate the volume.

V=1/3π r^2 h

SubstituteII

r= 6, h= 12

V=1/3π ( 6)^2 ( 12)

▼

Simplify right-hand side

CalcPow

Calculate power

V=1/3π(36)(12)

Multiply

V=1/3π(432)

CommutativePropMult