WorksheetsCircumference and Area of Circles
Total questions: 16
Worksheet time: 8mins
What is the formula for calculating the circumference of a circle?
C = 2 * π * r
C = π * r^2
C = π * d
C = 2 * r
If the radius of a circle is 7 cm, what is its circumference?
Approximately 50.24 cm
Approximately 31.42 cm
Approximately 43.98 cm
Approximately 21.99 cm
Calculate the circumference of a circle with a diameter of 10 m.
40.84 m
31.42 m
15.70 m
25.12 m
What is the formula for calculating the area of a circle?
A = 2πr
A = πd
A = r²/2
A = πr²
If the radius of a circle is 5 cm, what is its area?
15π cm²
20π cm²
30 cm²
25π cm²
Calculate the area of a circle with a diameter of 8 m.
16π m²
24 m²
32π m²
12 m²
A circular garden has a radius of 4 m. What is the circumference of the garden?
8 m
8π m
16 m
12π m
A pizza has a radius of 10 inches. What is the area of the pizza?
50π square inches
200π square inches
100π square inches
75π square inches
If a circle has a circumference of 31.4 cm, what is its radius?
10 cm
3 cm
5 cm
7 cm
A circular swimming pool has a diameter of 12 ft. What is its area?
48π ft²
18π ft²
24π ft²
36π ft²
If the area of a circle is 78.5 cm², what is its radius?
4 cm
6 cm
7 cm
5 cm
A circular track has a circumference of 400 m. What is the radius of the track?
50 m
80 m
100 m
63.66 m
If a circle's radius is doubled, how does its area change?
The area remains the same.
The area decreases by a factor of 2.
The area increases by a factor of 3.
The area increases by a factor of 4.
A circular table has a radius of 1.5 m. What is its circumference?
6.28 m
12.56 m
3.14 m
9.42 m
Calculate the area of a circle with a radius of 3.5 m.
12.56 m²
50.24 m²
28.27 m²
38.48 m²
If a circular field has a radius of 20 m, what is its circumference?
150.8 m
62.83 m
100 m
125.66 m
