Question

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

Answer 1

Total surface area of cabinet $=2(lb+bh+hl)$

$=2\left[\right(1\left)\right(2)+(1\left)\right(1.5)+(2\left)\right(1.5\left)\right]$

$=13$

Area of base cabinet $=lb=2$

Surface area painted $=13-2=11m^2$