The circumference of a circle measures $22 π$ $22pi$ units. How do you find the area of the circle?

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Answer 1 · 2017-03-29T19:30:59

$121 π$ $121pi$

Since the circumference of a circle measures $2 π r$ $2pir$ ,

then

$r = \frac{22 π}{2 π} = 11$ $r=(22pi)/(2pi)=11$

Since the area of a circle measures $π r^{2}$ $pir^2$ ,

then the area is:

$π \cdot 11^{2} = 121 π$ $pi*11^2=121pi$

The circumference of a circle measures 22pi22π22pi units. How do you find the area of the circle?