Area Of A Circle
10 Questions
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Use the information given to find the area of the circle. Use the following formula: Area = radius squared times pi. (pi = 3. 14)
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
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