10 Questions

Questions and Answers

- 1.The radius of a circle is 3 inches. What is the area?
- A.
9.25 inches squared

- B.
20.28 inches squared

- C.
28.26 inches squared

- 2.The diameter of a circle is 8 centimeters. What is the area?
- A.
50.24 centimeters squared

- B.
64 centimeters squared

- C.
16.24 centimeters squared

- 3.A circle has a radius of 12 inches. What is the area of the circle?
- A.
400.14 inches squared

- B.
452.16 inches squared

- C.
75.36 inches squared

- 4.Mark has a circular swimming pool with are radius of 7 feet. If he wants a cover to go over the pool what is the least amount of material needed to cover the pool?
- A.
43.96 feet squared

- B.
21.98 feet squared

- C.
153.86 feet squared

- 5.
- A.
10 x 3.14

- B.
5 x 2 x 3.14

- C.
5 x 5 x 3.14

- 6.Molly is making pizza for supper and wants to cover the top of the pizza with sauce. She has measured the radius of the pizza to be 5 inches, how many square inches will the sauce cover?
- A.
31.4 inches squared

- B.
78.5 inches squared

- C.
15.7 inches squared

- 7.
- A.
251.2 inches squared

- B.
125.6 inches squared

- C.
12.56 inches squared

- 8.A cicular stool needs to be covered with new fabric. If the diameter of the stool is 2 feet, how much material is needed to cover the stool?
- A.
12.56 feet squared

- B.
6.28 feet squared

- C.
3.14 feet squared

- 9.The radius is always half of the diameter.
- A.
True

- B.
False

- 10.The chord is the longest diameter in a circle.
- A.
True

- B.
False