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Worksheets7M: Circumference & Area of Circles
Total questions: 10
Worksheet time: 5mins
Rudra cuts out a circle with a radius of 20 millimeters. What is the circumference of the circle? Round the answer to the nearest whole millimeter. Use 3.14 for π.
106 mm
125 mm
63 mm
126 mm
Find the area of the painting.
32 π square inches
64 π square inches
128 π square inches
256 π square inches
What is the area of the shaded inner circle? Use 3.14 for π.
28.26 in.²
9.42 in.²
15.70 in.²
25.12 in.²
A circular swimming pool has a radius of 18 feet. Approximately how much plastic is needed to make a pool cover? Use 3.14 for π.
113.04 ft.²
56.52 ft.²
1,017.36 ft.²
508.68 ft.²
What is the approximate circumference of the circle? Use 3.14 for π.
12.56 in.
25.12 in.²
50.24 in.
25.12 in.
How can the relationship of π be represented using the circle below? Use 3.14 for π.
515.70=π
2.57.85=π
15.70=π
7.85=π
Which formula can be used to find the circumference of the bicycle wheel? Use 3.14 for π.
C=19⋅3.14
C=9.5⋅3.14
C=3⋅3.14
C=3.149.5
The circumference of a circle is C feet. The diameter of the circle is 16 feet. Which expression best represents the value of π?
8C
16C
C16
C8
A piece of fabric in the shape of a circle has a diameter of 24 millimeters. Which measurement is closest to the area of the fabric? Use 3.14 for π.
1,808.64 mm²
75.36 mm²
452.16 mm²
150.72 mm²
A circle has a radius of 3.2 feet. Which measurement is closest to the circumference of the circle in feet? Use 3.14 for π.
10.05 ft.
18.20 ft.
32.15 ft.
20.10 ft.
