2 years ago

The radius of a circle is 9 feet. What is the circumference?

1 answer:

7 0

Answer: 18 $\pi$

Step-by-step explanation:

The circumference formula is C= 2 $\pi$ r

r being the radius, so you can just plug in.

C= 2 $\pi$ (9) = 18 $\pi$

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