Question

The cost of fencing a square park at $Rs.10$ per m is $Rs.880$. Find the cost (in Rs.) of grassing it at $Rs.2.50$ per $m^2$.

Answer 1

Perimeter of Park $=\frac{880}{10}=88m$

$\Rightarrow 4a=88m\Rightarrow a=22m$

Area of Square Park $=(22{)}^2=484m^2$

Cost of grassing $=Rs(2.50\times 484)=Rs1210$