What is the approximate distance around the half circle with radius 12 centimeters?

1 answer:

4 0

You can find the perimeter of a circle by using the radius.
circumference = 2 $\pi r$
Circumference = 2 $\pi x 12$
circumference = 24 pi
Since you are only trying to find half of the circle you would divide your answer by 2

24pi / 2 = 12 pi

12 pi = 37.68

The answer is B. 37.7

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