Question

At a school carnival, the diameter of the mat of a trampoline is 10 feet and the diameter of its metal frame is 12 feet. What is the length, in feet, of the metal frame that surrounds the trampoline? Use 3.14 for π and round your answer to the nearest tenth.

Answer 1

The mat doesn't matter. The diameter of the frame would be 12 ft even if there were no mat inside it. The length (circumference) of the frame, just like any circle , is ( pi diameter) = (3.14 x 12) = 37.7 ft.