A jogging track is formed between two concentric outlines
MATHEMATICS · Subjective · CBSE · Mathematics · Areas Related to Circles · Areas Related to Circles
Problem
A jogging track is formed between two concentric outlines. The inner outline consists of a rectangle 80 m long and 30 m wide with semicircular ends on the shorter sides. The outer outline is drawn 4 m away from the inner outline all around it. Calculate the area of the track, that is, the region between the two outlines. (Use π=722.)