5). (2 points) Find the area of this regular octagon. (Cut it into triangles.)

Answer: ___________

6). (2 points) Find the area of this basketball key. The end is a semi-circle. Use = 3.14

Answer: ___________

7). (2 points) Find the area of this slice of pie. The sides are the radius of the big circle. Use pi =- 3.14

Answer: ___________