Volume of Cones

Volume of a Cone

The volume of a cone is the number of unit cubes, or cubic units, needed to fill the cone.

The formula for the volume of a cone is 1/3 the product of the base Area and the height of the cone.

V= 1/3 Bℎ

Volume of a Cone

Since the base of a cone is always a circle, you can substitute π r² for B.

V= 1/3 πr²ℎ

The volume of a cone is 1/3 the volume of a cylinder.

Volume of a Cone

To the nearest hundredth, what is the volume of the cone in terms of π?

Volume of a Cone

To the nearest tenth, what is the volume of the cone in terms of π?

Volume of a Cone

What is the volume of the cone in terms of π?

Volume of a Cone

Find the approximate volume of the cone in terms of π.

Volume of a Cone

Doubling your radius QUADRUPLES your Volume.

Homework:

Volumes of Cones Worksheet

Volume of a Cone

You are making bug repellant candles for an outdoor barbecue. What is the volume of wax needed for one of the candles? Use 3.14 for π.

V = 1/3 B h

B = πr²

π (5)²

25π

3.14

x 25

78.5

V = 1/3 (78.5)(6)

V = 157 in.³