Question

The diagram shows a track composed with a semicircle on each end. The area of the rectangle is 14,400 square meters. What is the perimeter of the th rack? Use 3.14 for pi

Answer 1

602 .6

Explanation:

∴14,400=160b

⇒b=90m

902m=45m

2πr=2π×45≈282.6m

320m+282.6m=602.6m