1. Volume of Cones Section 8.2

2. 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

3. 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 with the same dimensions.

4. Volume of a Cone
To the nearest hundredth, what is the volume of the cone in terms of π?

5. To the nearest tenth, 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?

6. 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?

7. Find the approximate volume of the cone; in terms of π.
Volume of a Cone
Find the approximate volume of the cone; in terms of π.

8. Doubling your radius QUADRUPLES your Volume.
Volume of a Cone
Doubling your radius QUADRUPLES your Volume.

9. 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

10. 1.5 in.
2 in.
4 in.
5 in.

11. 6 in.
3 in.
3 in.
4 in.