Andrew's dog Bubba has an exercise area behind the house. A stake in the ground has a 12 foot rope tied to it. The other end of the rope is fastened to Bubba's collar. If Bubba travels in a circular path around the stake. What is the largest Circumference allowed by the rope's length. Round to the nearest food.

75 feet

38 feet

452 feet

24 feet

what is the answer and why???

3 answers

http://www.jiskha.com/display.cgi?id=1430705285
I seen that, I don't understand that though
C = pi * d

C = 3.14 * 24

C = ?

Which part don't you understand?