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18 votes
The radius of a circle is 11.7 in. Find the circumference \textit{to the nearest tenth}to the nearest tenth.

2 Answers

14 votes

R = 11.7

C =
2\pi r

Step-by-step:

Subsitute r with 11.7


C = 2\pi 11.7

Multiply 2 * 11.7


C = 23.4\pi

Multiply 23.4 * pi


C = 73.5 :)

User Victor Powell
by
7.3k points
3 votes

Answer:

73.5

Explanation:

circumference = 2πr , where r = radius

given radius = 11.7 so r = 11.7

C = 2πr

==> plug in r = 11.7

C = 2π(11.7)

==> multiply 2 and 11.7

C = 23.4π

==> multipl 23.4 and π

C = 73.5 ( rounded to the nearest tenth )

User Gaelan
by
6.6k points