Question

Find the cost of fencing a square part of side $250m$ at the rate of Rs. $20$ per metre.

Answer 1

perimeter$=4\left(side\right)$

perimeter$=4\left(250\right)$

perimeter$=1000m$

cost of fencing $=perimeter\times rate$

$=1000\times 20Rs$

cost of fencing $=Rs.20,000$