Question

A rectangular chalk box has a length 16 cm, breadth 8 cm and height 5 cm. Find its total surface area.

Answer 1

We have: $l=16cm,b=8cm,h=5cm$

Total Surface area of the rectangular chalk (Cuboidal in shape) $=2(lb+bh+lh)$

$=2[16\times 8+8\times 5+5\times 16]$

$=2[128+40+80]$

$=2\times 248$

$=496c{m}^2$