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

All we have to do here is to calculate the circumference of the metal frame.
The formula for circumference in terms of diameter d is C = p*d.

Thus, the desired answer is C = 3.14(12 ft) = 37.7 feet (rounded up from 37.68 feet).