Rebirth

And what formula did you used, I used the cylinder formula

Unbelivable, none of the answer choices are right, idk if this somesort of mistake. Plus im about to take my end of course test pretty soon.

Thanks i understand it now   

oh nm

first where did you get 8n and 12 from?

So am i suppose to mutiply 21 or 89 to n to see if they equal 180 degrees?

im still not getting it

15.7

133 1/4 or 133.25

2/7 or 0.28571428

1/24