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WorksheetsCircumference of circles
Total questions: 22
Worksheet time: 59mins
The definition of diameter is
distance from the center of any point on the circle
distance across the circle through the center
distance from one point to another
distance around the circle
The definition of radius is
distance from one point to another point
distance around the circle
distance from the center to any point on the circle
distance across the circle through the center
what is the formula for finding diameter
r = 2 d
d = 2 r
a = m c2
c = π 2 r
what is the formula for finding area of a circle
C = π r2
A = π r2
A = π r2 / 2
C = 2 π r
If the radius of a circle is 4 inches, what is the diameter?
2 inches
2 feet
4 inches
8 inches
What is the Circumference of this circle?
(Use 3.14 for π )
452.39 cm
452.16 cm
75.36 cm
75.40 cm
What is the Circumference of this circle?
(Use 3.14 for π )
452.39 cm
452.16 cm
75.36 cm
75.40 cm
The diameter of a pizza is 14 inches. Find its radius.
43.96 inches
4.46 inches
7 inches
7 cm
Find the circumference of the circle. Use 3.14 for the value of π.
15.7 in
31.4 sm
31.14 in
31.4 in
Find the circumference of a circle with a diameter of 10 meters. Use 3.14 for the value of π.
31.4 inches
31.4 meters
62.8 meters
62.8 inches
A dartboard has a circumference of 62.8 inches. What is its radius? Use 3.14 for the value of π.
20 inches
10 inches
3.14 inches
5 inches
A circle is inscribed in a square of a side 10 cm. Determine the circumference of the circle. Use 3.14 for the value of π.
62.8 cm
31.4 cm
31.4 in
62.2 in
What is the diameter of a circle with a radius of 3 ?
3
6
9
12
Daniel wants to buy cookies for his friend. The radius of a cookie is 5 inches. What is the cookie’s circumference?
10 in
2.5 in
15.7 in
31.4 in
How many feet around is the pool?
The London Eye has a diameter of 120 meters. If you are sitting in one of the capsules, about how far do you travel in two rotations of the Ferris wheel?
180 meters
380 meters
760 meters
360 meters
