1. Volume of Cones

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

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

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

6. Volume of a Cone
What is the volume of the cone in terms of π?

7. 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. Homework:
Volumes of Cones Worksheet

10. Volume of a Cone V = 1/3 B h B = πr² π (5)² 25π 3.14 x 25 78.5
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

11. 4 in.
5 in.
1.5 in.
2 in.
6 in.
3 in.
3 in.
4 in.