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2 votes
If the circumference of a circle is 84.5 ft, find the radius.

2 Answers

5 votes

Answer:

r = 13.5 ft

Explanation:

The circumference of a circle of radius r is C = 2(pi)r.

Here, C = 84.5 ft = 2(pi) r, or

C = 84.5 ft = 6.28r

Dividing both sides by 6.28 results in the value of r:

r = 84.5 ft / 6.28 = 13.5 ft

User Elliot Coad
by
7.5k points
4 votes

Answer:

13.448, rounded off: 13.5 ft

Explanation:


r=(C)/(2\pi )

Where r = radius, C = circumference.


r=(84.5)/(2\pi ) =13.448 = 13.5 ft

User Somesingsomsing
by
7.9k points

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