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

It is given that
Cuboid length= 80cm= L
Breath = 40cm=b
Height=20cm=h

WKT,
Total surface area = `2[lb+bh+hl]`

`=2[(80)(40)+40(20)+20(80)]`

`=2[3200+800+1600]`

`=2[5600]`

`=11,200cm^2`

`"Lateral  surface  area" = 2[l+b]h=2[80+40]20`

`=40(120)`

`=4800cm^2`