Estimate the radius of a circle with the circumference of 272.2 inches. Help me with the steps please?

Here's the correct answers if they're still the same...

1. 151 in
2. 43.3 in
3. 1,661 cm2
4. Triangular pyramid
5. 346 m2
6. 98 ft3
7. 8 in x 10 in
8. It is eight times as great
9. 2,300 millimeters

hahah never mind I got it. Estimation!

So 43.3 in. is the answer. Forgot. Thanks.

Ms Sue,

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 :

43.3 in.
136.1 in.
86.7 in.
5887.2 in

So not sure why ?

Wow a hole year an NO ANSWERS tsk

That must be a really hard test if Ray has taken a whole year and still has yet to post the rest of the answers. Take your time, Ray, I guess...

@The Helper is correct

thx bro

im really behind on math

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

Ugghh!

Of course you're right, but I don't like the answer choices with decimals. In my opinion, estimates should not involve decimals.