1. 9.6 Surface Area and Volume of Spheres 5/5/08
A sphere is the set of all points in space that are the same distance from a point, the center of the sphere.
A hemisphere is created when a sphere is cut in half.

2. Surface Area of a Sphere
Surface area = 4 π (radius)2
S = 4 π r2 C
Radius

3. Find the Surface Area of a Sphere
Find the surface area of the sphere. Round your answer to the nearest whole number. a.
The radius is 8 in.
8 in.

4. Find the Surface Area of a Sphere
Find the surface area of the sphere. Round your answer to the nearest whole number. b.
The radius is 5 cm.
10 cm.

5. Volume of a Sphere
Volume = C
radius

6. Find the Volume of a Sphere
Find the volume of the sphere. Round your answer to the nearest whole number. a.
2 ft.

7. Find the Volume of a Sphere
Find the volume of the hemisphere. Round your answer to the nearest whole number.
b. A hemisphere has half the volume of a sphere. a
5 in.

8. Find the Volume of a Sphere
Find the volume of the sphere. Round your answer to the nearest whole number. a.
6 in.

9. More Practice!!!! Textbook – p. 519 #2 – 7, p. 520 # 8 – 10
Homework – worksheet 9.6