Question

find the area of lawn​

Answer 1

$area \: of \: rectangular \: lawn =length \times breadth \\10 \times 8 \\ 80m \\ \\ 2.5 \times 4 \\ 10 \\ \\ 80 + 10 \\ 90m$

Answer 2

the answer is

area of lawn=(total area) -(area of house)

=(10×8)-[(10-2.25)(8-2.25)]

=80-44.5625

=35.4375m^2