Question

The diameter of a circular field is 84m. If old man walks at the rate of 11m per minute, how long woll it take for him to walk round the field once?

Answer 1

Radius =84/2=42m
Circumfrence=2πr
                      =2(22/7)42
                      =264m
Time taken =circumfrence/speed
                   =264/11
                   =24 minutes

It will take 24 minutes