Question

The measures of a box are $50cm\times 36cm\times 25cm$. To make the cover of the box.How much cloth is needed?

Answer 1

Given
Length of box (I) $=50cm$
Breadth of box (b) $=36cm$
Height of box $\left(h\right)=25cm$
The necessary cloth to make its cover = surface area of the box
$=2(lb+bh+hl)$
$=2\left[\right(50\times 36)+(36+25)+(25+50\left)\right]$
$=2[1800+900+1250]$
$=2\times 3950=7900{cm}^2$