Question

a rectangular park is 40m long and 25m wide. A path 1.5m wide is construted outside the park. Find the area of path​

Answer 1

Area of path is  area of park with path - area of rectangular park                      
area of park =l x b= 45 x 30=1350 cm2
area of park with path is =45+2.5+2.5 x 30+2.5+2.5 = 1750cm2
area of path = 1750-1350=400 cm2

Answer 2

$area \: of \: rectangular \: path = length \times breadth \\ 40 \times 25 \\ 1000m \\a \: path \: wide \: is \: construted \: outside = 1000 \times 1.5 \\ 1500m$