Question

Find the lateral surface area and total surface area of a cuboid of length 80 cm, breadth 40 cm and height 20 cm.

Answer 1

$l=80cm,b=40cm,h=20cm$

Therefore,

TSA = $2(lb+bh+hl)=2(80\times 40+40\times 20+80\times 20)=11200$ $c{m}^2$

LSA = $2(l+b)h=2(80+40)20=4800$ $c{m}^2$