What is the radius of a circle with circumference of 22m?

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What is the radius of a circle with circumference of 22m?

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Answer 1 · 2015-11-16T19:25:59

Approximately $3.5$ $3.5$ m

Explanation:

The circumference of a circle C is equal to:
$C = 2 \cdot π \cdot r$ $C=2*pi*r$
That's because the diameter of a circle fits $π$ $pi$ times in the circumference. So if you solve $r$ $r$
$r = \frac{C}{2 \cdot π} = \frac{22}{2 \cdot π} \approx 3.5$ $r=C/(2*pi)=22/(2*pi)~~3.5$

(using the approximation $π \approx \frac{22}{7}$ $pi ~~ 22/7$ )

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What is the radius of a circle with circumference of 22m?

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