Area And Circumference Of A Circle

15 Questions I By Annefowler

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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Questions and Answers

1.
Round to the nearest tenth. Find the circumference of a circle with a radius of 5.6 meters.
- A.
  
  98.5
- B.
  
  35.2
- C.
  
  36.8
- D.
  
  18.5

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.
- A.
  
  194.1
- B.
  
  2998.1
- C.
  
  97.0
- D.
  
  61.8

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.
- A.
  
  157.0
- B.
  
  256.3
- C.
  
  1962.5
- D.
  
  503.1

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.
- A.
  
  6702.1
- B.
  
  1587.3
- C.
  
  1675.5
- D.
  
  145.1

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.
- A.
  
  36.3
- B.
  
  36.4
- C.
  
  145.2
- D.
  
  145.1

10.
Round to the nearest tenth. A spinkler can spray water 10 feet in all directions. How much area can the sprinkler water?
- A.
  
  62.8 sq.feet
- B.
  
  36.3 sq.feet
- C.
  
  314.0 sq.feet
- D.
  
  98.9 sq.feet

11.
Round to the nearest tenth. What is the number of square meters of a half circle whose diameter is 8 m?
- A.
  
  50.2
- B.
  
  45.6
- C.
  
  15.3
- D.
  
  25.1

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?
- A.
  
  50.2
- B.
  
  25.1
- C.
  
  45.6
- D.
  
  13.6

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?
- A.
  
  307.7
- B.
  
  615.4
- C.
  
  87.9
- D.
  
  14.0

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?
- A.
  
  144.2
- B.
  
  425.1
- C.
  
  388.7
- D.
  
  452.2

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.
  
  78.5
- B.
  
  40.0
- C.
  
  12.7
- D.
  
  6.4