Answer :
circumference = pi * diameter
circumference of metal frame = pi * (diameter of metal frame)
(diameter of metal frame) = 12
Circumference of Metal Frame = 3.14 * 12 = 37.68
therefore D: 37.7 feet would be your answer
circumference of metal frame = pi * (diameter of metal frame)
(diameter of metal frame) = 12
Circumference of Metal Frame = 3.14 * 12 = 37.68
therefore D: 37.7 feet would be your answer