Area And Circumference Of A Circle

15 Questions  I  By Annefowler on March 18, 2009
Use your formulas for finding area and circumference of a circle to answer the following questions.  All answers are rounded to the nearest TENTH... please be careful to round your answers correctly!!!!

  

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1.  Round to the nearest tenth. Find the circumference of a circle with a radius of 5.6 meters.
A.
B.
C.
D.
2.  Round to the nearest tenth. Find the circumference of a circle with a radius of 51.25 inches.
3.  Round to the nearest tenth. Find the circumference of a circle with a radius of 30.9 centimeters.
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B.
C.
D.
4.  Round to the nearest tenth. Find the area of a circle with a diameter of 19 mm.
5.  Round to the nearest tenth. Find the area of a circle with a diameter of 25 yd.
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B.
C.
D.
6.  Round to the nearest tenth. Find the area of a circle with a radius of 13.8 m.
7.  Round to the nearest tenth. Find the area of a circle with a diameter of 46.2 cm.
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B.
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D.
8.  Round to the nearest tenth. Find the area of a circle with a radius of 3.25 in.
9.  Round to the nearest tenth. Find the area of a circle with a diameter of 6.8 meters.
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B.
C.
D.
10.  Round to the nearest tenth. A spinkler can spray water 10 feet in all directions. How much area can the sprinkler water?
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B.
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D.
11.  Round to the nearest tenth. What is the number of square meters of a half circle whose diameter is 8 m?
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B.
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12.  Round to the nearest tenth. Olivia used a stick to draw a circle in the sand. The circle was 4 meters in radius. How many square meters were inside the circle?
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B.
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D.
13.  Round to the nearest tenth. Isabella baked cookies that were each about 14 centimeters in radius. About how many square centimeters was the area of each cookie?
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B.
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D.
14.  Round to the nearest tenth. Ryan used a drafting compass to draw a circle on paper. The circle was 12 cm in radius. How many square centimeters were inside the circle?
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B.
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D.
15.  Round to the nearest tenth. A pizza was cut into 8 equal pieces. John's crust on his piece measured 5 inches. From the point of his slice to the edge of his crust, how many inches long was John's slice?
A.
B.
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D.
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