A cuboid has total surface area of `40m^2` and its lateral surface area is `26 m^2` . Find the area of its base.

Explanation

TSA`=2(lb+bh+hl)=40`

`=lb+bh+hl=20m^2-(1)`

LSA`=2(bh+hl)=26m^2`

`=bh+hl=13m^2-(2)`

subtracting equation 2 from equation 1

`lb+bh+hl-bh-hl=20-13`

`lb=7m^2`

Area of base=l*b=`7m^2`.