The circumference of a circle is 138.16 centimeters. What is the area of the circle?

asked Aug 19, 2017 123k views

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4 votes

Circumference formula tells you
$C=2 \pi r$

$C=2 \pi r$

$138.16=2 \pi r$

21.99= r

The formula to find the area of a circle is
$A= \pi r^2$

$A= \pi r^2$

$A= \pi (21.99)^2$

$A= \pi (483.56)$

A= 1519cm^2

MissingNumber answered Aug 25, 2017

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