Question

Prameela painted the outer surface of a cabinet of measures $1m\times 2m\times 1.5m$. Find the surface area she cover if she painted all except the bottom of the cabinet?

Answer 1

Area of ($4$ walls $+$ ceiling )

$=(2hl+2bh)+lb$

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

$=2\times 3+2\times 1.5+2$

$=6+3+2$

$=11$.