Post on 06-Feb-2018
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Circumference of a Circle
Find the circumference of each circle. Use 3.14 for pi.
To find the circumference of a circle, use the formula pi x diameter = circumference.This formula is often written as C = π x d.
The circle pictured here has a diameter of 10 cm.d = 10 cmπ ≈ 3.1410 cm x 3.14 = 31.4 cm
10 cm
6 cm
a. b. 7 mc.
4 km
d.
9 in.
e.
11 mm
f.
5 m
i
g. Karla and Jeremy have a cicular pool with a diameter of 12 feet. What is the circumference of the pool?
Super Teacher Worksheets - www.superteacherworksheets.com
Circumference of a Circle
Find the circumference of each circle. Use 3.14 for pi.
To find the circumference of a circle, use the formula pi x diameter = circumference.This formula is often written as C = π x d.
The circle pictured here has a diameter of 10 cm.d = 10 cmπ ≈ 3.1410 cm x 3.14 = 31.4 cm
10 cm
Super Teacher Worksheets - www.superteacherworksheets.com
Circumference of a Circle
Find the circumference of each circle. Use 3.14 for pi.
To find the circumference of a circle, use the formula pi x diameter = circumference.This formula is often written as C = π x d.
The circle pictured here has a diameter of 10 cm.d = 10 cmπ ≈ 3.1410 cm x 3.14 = 31.4 cm
10 cm
6 cm
a. b. 7 mc.
4 km
d.
9 in.
e.
11 mm
f.
5 m
i
g. Karla and Jeremy have a cicular pool with a diameter of 12 feet. What is the circumference of the pool?
ANSWER KEY
18.84 cm 21.98 m 12.56 km
28.26 in. 34.54 mm 15.70 mi
3.14 x 12 = 37.68 ft