Question

an object is moving in circular path with radius 21m.find distance and displacement

Answer 1

I thought ur Ques is incomplete

Answer 2

The circumference of circle will be distance of that path that is....

$2\pi \: r$
$2 \times 22 \div 7 \times 21 \\ = 44 \times 3 \\ = 132 \: m {}^{2}$
and displacement will be zero.. because the body show no displacement...