Question

Almirah 1.2m×40cm×2m is made of iron sheet. Find area of the sheet used in it

Answer 1

The almirah is a cuboid

Total surface area of a cuboid-2(lb+bh+lh)
=1.2m×0.4m×2m
=0.96m^2

area of the iron sheet is 0.96m^2

Answer 2

surface area of cuboid(almirah)=2(lb+bh+hl)
=2(120cm×40cm+40cm×200cm+200cm×120cm)
=2(4800cm^2+8000cm^2+24000cm^2)
=2(36800xm^2)
=73600cm^2