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Circumference and Area of Circles

Total questions: 13

Worksheet time: 52mins

Name
Class
Date
1.

If my diameter is 19 inches, what is my radius?

a)

38 inches

b)

9.5 inches

c)

59.66 inches

d)

119.32 inches

2.

What is the circumference of this circle ?

a)

3.14 cm

b)

37.68 cm

c)

24 cm

d)

68.4 cm

3.
A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's area?
a)
31.25 m2
b)
29.55 m2
c)
30.36 m2
d)
28.26 m2
4.
What is the area of this circle?
a)
1385.44
b)
2142.12
c)
5541.77
d)
1289.12
5.
Jayne has a very large circular lollipop that has a circumference of 25.12 inches. What would the diameter of Jayne’s lollipop be? Use π = 3.14.
a)
4 in.
b)
8 in.
c)
12 in.
d)
16 in.
6.
The circumference is 62.8 inches.  What is the radius?
a)
20 inches
b)
10 inches
c)
6.28 inches
d)
31.4 inches
7.
Ms. Merine calculated that her hoop earring has a diameter of 3.5 centimeters. What is the area of her earring (round to the hundreth's place)?
a)
9.25 cm2
b)
9.62 cm2
c)
9.15 cm2
d)
9.99 cm2
8.
What is π ? (Best Choice)
a)
The ratio of the circumference of any circle to its diameter.
b)
Exactly 3.14
c)
Exactly 3.1415
d)
Exactly 3.141593
9.

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

10.

Sadie 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

11.

Rocky 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.

12.

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

13.

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