1. 12.6 – Surface Area and Volume of Spheres

2. Sphere: The set of all points in space equidistant from a given point

3. Radius:Length from the center of the sphere to all the sides of the sphere

4. Hemisphere:Half a sphere

5. Great Circle:Plane that contains the center of the sphere, the radius is the same as the one for the sphere

6. Surface Area of a Sphere:

8. Volume of a Sphere:

9. Find the surface area.

10. 11

11. Find the volume.

12. 10.5

13. The center of the sphere is C and its circumference is 17  feet. a. What is half of the sphere called? Hemisphere

14. The center of the sphere is C and its circumference is 17  feet. b. Find the radius of the sphere.

15. The center of the sphere is C and its circumference is 17  feet. c. Find the diameter of the sphere. r = 8.5ft d = 17ft

16. The center of the sphere is C and its circumference is 17  feet. d. Find the volume of the hemisphere. 2

17. SA = 324  ft 2 Find the radius of a sphere with the given information.

18. V = 36  in 3

19. Find the radius of a sphere with the given information. V = 2304  yd 3

20. 12.6842-8443-5, 12-17, 23 HW Problems #23, Just find the volume… V = hemisphere + cone