1. 9.3
Volume of Spheres
How do you find the volume of a sphere?

2. ADDITIONAL EXAMPLE 1
Find the volume of each sphere. Round your answers to the nearest tenth if necessary. Use 3.14 for π. A
9.2 in3

3. ADDITIONAL EXAMPLE 1
Find the volume of each sphere. Round your answers to the nearest tenth if necessary. Use 3.14 for π. B
310.2 cm3

4. ADDITIONAL EXAMPLE 2
A steel ball bearing has a diameter of 1.6 centimeters. What is the volume of this steel ball? Round your answer to the nearest tenth if necessary. Use 3.14 for π.
2.1 cm3

5. 9.3 LESSON QUIZ
8.7.A
Round your answers to the nearest tenth if necessary. Use 3.14 for π. 1.
A ball fits exactly into a cylinder as shown in the figure. The volume of the cylinder is 30 cm3. What is the volume of the sphere?
20 cm3

6. Round your answers to the nearest tenth if necessary. Use 3.14 for π.2.
Find the volume of a sphere with a radius of 2.6 inches.
73.6 in3 3.
Find the volume of a sphere with a diameter of 8.2 meters.
288.5 m3

7. Round your answers to the nearest tenth if necessary. Use 3.14 for π.4.
Jen has a silver charm on her bracelet in the shape of a soccer ball with a radius of 1 centimeter. What is the volume of this charm?
4.2 cm3 5.
A ball has a circumference of inches. What is the volume of the ball?
904.3 in3

8. How do you find the volume of a sphere?
Sample answer:
Find the product of , the cube of the radius, and π.