3 years ago

Find the area of a circle with a circumference of 6 pi

2 answers:

N76 [4]3 years ago

7 0

To find the circumference of a circle you use the formula C=pi*(radius*radius). If you know that the cuircumference is 6 pi, you first plug that in to solve for the radius.
6pi=pi*(r*r)
6pi/pi=(r*r)
Square root of(6pi/pi)=r
2.45=r
Then to find the area you use the formula A=pi*(r*r) which is
A=Pi*(2.45*2.45)
A=6pi or 18.85

elena-14-01-66 [18.8K]3 years ago

3 0

The circumference formula is 2 $\pi$ r and if the circumference is 6pi then the radius is 3. apply that to the area fromula ( $\pi$ r^2 ) and you get 9 $\pi$

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MA_775_DIABLO [31]

In order to find the scale they are using first you must divide 12 by 3.75.

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