C = pi * d
272.2 = pi * d
272.2/pi = d
use 3.14 for pi
C = pi * 2r
272 = 3 * 2r
272 = 6r
272/6 = r
45 = r
I understand it now , but my choice answers none are 45? I followed your steps and got the same answer as you.
But your calculations are right.
Choices are :
So not sure why ?
hahah never mind I got it. Estimation!
So 43.3 in. is the answer. Forgot. Thanks.
Of course you're right, but I don't like the answer choices with decimals. In my opinion, estimates should not involve decimals.
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