Question

A rectangular plot $30m$ long and $18m$ wide is to be covered with grass leaving $2.5m$ all around it. Find the area (in $m^2$) to be laid with grass.

Answer 1

Area of big rectangle $=(30\times 18)m^2$

leaving $2.5m$ each side that mean $2\times 2.5=5m$

Subtracting $5m$ from each side $(25\times 15)m^2=325m^2$

$\therefore$ Area of grass $=325m^2$

Hence, the answer is $325m^2.$