Question

A race of $16km$ is completed in taking $4$ rounds of a square field. Then find the length and area of the field.

Answer 1

$4$ rounds $\times$ perimeter $=16km$

$1$ round is of $4km$

Perimeter of square field is $4km$

$4\times$ side $=4km$

Side $=1km$

Area $=(side{)}^2={\left(1\right)}^2=1k{m}^2$