11.8 Surface Area of a Sphere

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I know that some of the problems are so that dark that you can't read the numbers so here is what you can't see for each problem:

1. r=9

3. r=12

4. Shaded area = 40 pi square cm. Find the surface area.

5. Surface area = 64 pi square cm. Find the volume.

6. Volume= 288 pi cubic cm. Find the surface area.

7. radius = R

12. A farmer must periodically resurface the interior (wall, floor,

of course, if you were one of the 20 students who did not complete last night's 11.7 HW assignment, you have extra homework! Make sure that both 11.7 AND 11.8 are complete for tomorrow!

Reminder! tomorrow is a professional development day! You will be released at 11:35 tomorrow. Lunch will be served at 11:40. Buses depart at 11:50.