1. Objective: To find the surface area and volume of a sphere.
Chapter 10 Lesson 7
Objective: To find the surface area and volume of a sphere.

2. Theorem 10-10 Surface Area of a Sphere
Radius
Surface Area
Radius

3. Example 1: Finding Surface Area of a Sphere
Find the surface area of a sphere with diameter 14 in.

4. Example 2: Finding Surface Area of a Sphere
Find the surface area of the sphere. Round your answer to the nearest whole number.
The radius is 8 in.
8 in.

5. Example 3: Real World Connection
Geography Earth’s equator is about 24,902 miles long. Approximate the surface area of Earth by finding the surface area of a sphere with circumference 24,902 mi.
Step 2: Find the SA.
C=24,902 mi.
Step 1: Find the radius
The surface area of Earth is about 197,400,000 mi2

6. Theorem 10-11 Volume of a Sphere
radius
Volume
Radius

7. Example 4: Finding Volume of a Sphere
Find the volume to the nearest cubic inch of a sphere with diameter 60 in.

8. Example 5: Finding Volume of a Sphere
Find the volume of the sphere. Round your answer to the nearest whole number.
2 ft.

9. Example 6: Using Volume to Find Surface Area
The volume of a sphere is 4200 ft3. Find the surface area to the nearest tenth.

10. Example 7: Using Volume to Find Surface Area
The volume of a sphere is 5000 ft3. Find the surface area to the nearest tenth.

11. Assignment
Page
#1-20; 30