Question

Rukhsar painted the outside of the cabinet of measure $1m\times 2m\times 1.5m$ . How much surface area did she cover if she painted all except the bottom of the cabinet?

Answer 1

A cabinet has $6$ surfaces including bottom surface.

However, we have to paint only 5 surfaces.

So, we have one front and one back surface $(2\times 1.5)$,

one left and one right surface $(1\times 1.5)$ and one upper surface $(2\times 1)$.

So, area to be painted is

$=(2\times (2\times 1.5\left)\right)+(2\times (1\times 1.5\left)\right)+(2\times 1)$

$=11$ sq. m