Question

A rectangular park 35 m long 18 m wide is to be covered with grass, leaving 2.5 m uncovered all around it. Find the area to be laid with grass.

Answer 1

The field is planted with grass, with 2.5 m uncovered on its sides.

The field is shown in the given figure.



Thus, we have;
Length of the area planted with grass = $35-(2.5+2.5)=35-5=30\mathrm{m}$

Width of the area planted with grass = $18-(2.5+2.5)=18-5=13\mathrm{m}$

Area of the rectangular region planted with grass = $30\times 13=390{\mathrm{m}}^2$