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The circumference of a circle is 8.72cm. Find the length of the diameter. Give your answer rounded to 2 DP.

The circumference of a circle is 8.72cm. Find the length of the diameter. Give your answer rounded to 2 DP.
61.4k views
25 votes
The circumference of a circle is 8.72cm.

Find the length of the diameter.
Give your answer rounded to 2 DP.

User Bjornruffians
by
8.4k points

2 Answers

4 votes
It’s 5,5cm the diameter
User Simon Ness
by
7.5k points
10 votes
Circumference = 2(pi)(r)
2(pi)(r)=8.72
r = 8.72/(2*pi)
r = 1.39cm
Diameter = 2r
Diameter = 2*1.39 = 2.78 cm
User Leevo
by
8.6k points
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