Quiz About Area And Circumference Of A Circle
10 Questions
| Total Attempts: 156
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.Sam has baked a circular cake. The cake has a diameter of 10 inches. Sam needs to know how much icing it will take to cover the top of the cake, which of the following was does Sam need to use to figure this out?
- 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.Pam's mom is fixing cookies for her class. She wants to put icing on the cookies. The radius of the cookies is 2 inches. She is making 20 cookies, what is the area that the icing will cover if she icings all 20 cookies?
- 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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Sample QuestionWhich of the following is a chord, but not a diameter?
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Sample QuestionWhat do you call a line that connects 2 points on the circumference, that is not a diameter?
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