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Find the circumference of a circle that has an area of 153.86 cm.

1 Answer

5 votes

Answer:

C=
14\pi or ≈43.96cm

Explanation:

Start by figuring out the Area of the circle to get the radius (r)

Area (A)=153.86 cm

A=
\pi r²

153.86=
\pi

153.86÷
\pi=r²

49=r²

√49= r

r= 7cm

Next insert r=7cm into the Circumference equation of a circle

C=2
\pir

C= 2×
\pi×7

C=14
\pi or C=43.96cm

User LoPiTaL
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