What is the circumference of a circle whose area is 452.16 square meters?

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What is the circumference of a circle whose area is 452.16 square meters?

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Answer 1 · 2016-08-03T23:23:55

$=75.4$ metres

Explanation:

Area of the Circle $=pir^2=452.16$ where $r$ is the radius
So
$r^2=452.16/pi$
or
$r^2=143.92$
or
$r=12$
Circumference of the circle $=2pir$
$=2pi(12)$
$=24pi$
$=75.4$ metres

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What is the circumference of a circle whose area is 452.16 square meters?

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Explanation:

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