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Find parts of a circle given the area or circumference

Total questions: 10

Worksheet time: 50mins

Name
Class
Date
1.

Saichelle bought a circular rug that is 9 feet in diameter. What is the circumference of the rug rounded to the nearest tenth of a foot?

a)

4.5 feet

b)

14.1 feet

c)

28.3 feet

d)

56.5 feet

2.

What is the approximate area of the circle above?

a)

44 inches squared

b)

154 inches squared

c)

616 inches squared

3.

The radius of a circle is 12 cm. What is the approximate circumference of the circle?

a)

75 cm

b)

38 cm

c)

24 cm

4.

A flower pot has a circumference of 35 inches. What is the approximate length of the radius of the flower pot?

a)

3.3 inches

b)

5.6 inches

c)

6.8 inches

d)

11.1 inches

5.

A circular track with a diameter of 60 meters is shown. Shaleah walked around the track 4 times. Approximately how many meters did she walk?

a)

377

b)

2826

c)

754

d)

11,304

6.

Samantha has 38 inches of fringe to sew around a circular pillow. What is the approximate diameter of the largest pillow she can use?

a)

6 inches

b)

9 inches

c)

10 inches

d)

12 inches

7.

The circumference of a circle is 188 meters. What is the approximate radius of the circle?

a)

128 meters

b)

94 meters

c)

60 meters

d)

30 meters

8.

H.O.T.

Derek has a choice between 2 pizzas: a circular pizza with a 10-inch diameter, and a square pizza with a 9-inch side. Which statement below is true?

a)

The pizzas have the same area.

b)

The area of the square pizza is larger.

c)

The area of the circular pizza is larger.

d)

The area of the circular pizza is 100 square inches.

9.

H.O.T.

A circle has a diameter of 4.5 cm. A larger circle has a diameter of 24 cm. What is the approximate difference in the circumferences of the two circles?

a)

19.5 cm

b)

28.5 cm

c)

61 cm

d)

90 cm

10.

H.O.T.

A farmer grows potatoes on a circular plot of land that has a radius of 20 meters. Each potato plant requires 2 square meters of soil. What is the maximum number of potato plants the farmer can grow?

a)

80

b)

628

c)

1256

d)

2512