1. No warmup: Grab a note sheet from front table and fill out theorem 11-12 on sheet using p.647 in textbook Have homework out Extra credit opp: Due Thursday (3 bonus pts on chp. 11 test or bonus pass) Find an article pertaining to math and write a 2 paragraph summary OR Write a one page letter to a soldier (go to www.operationgratitude.com, click on “get involved” and “write letters” for instructions)

2. Sphere examples 1.) The volume of a sphere is 972π in. What is the surface area of the sphere? 2.) The volume of a sphere is 8788 π ft. What is the surface area? 3 3 3

3. 66.5π+148

4. 84+20π

5. 220-8π

6. Ex 1: Are these similar? 10 m 4 m 30 12

7. Ex 2: Given the volumes of 2 similar cones, find the similarity ratio. V= 120π ftV= 18π ft Ex 3: Given two surface areas of two similar figures and the volume of the larger figure, what is the volume of the smaller? S.A.= 52 sq. ft S.A.= 208 sq. ft V=192 ft 33 3

8. Ex 4: Given two volumes of two similar figures and the surface area of the smaller figure, what is the surface area of the larger? V= 27 mV=64mS.A.= 63 sq m 33