Question

The meaurements of a luggage box are 48cm, 36cm, 28cm. How many sq. cm of cloth is required to make a cover?

Answer 1

$$\begin{gathered} \mathrm{Measurement}\mathrm{of}\mathrm{the}\mathrm{box}\mathrm{is}, \\ \mathrm{Let}\mathrm{l}=48\mathrm{cm},\mathrm{b}=36\mathrm{cm},\mathrm{h}=28\mathrm{cm} \\ \mathrm{Now}\mathrm{we}\mathrm{know}\mathrm{that}\mathrm{required}\mathrm{cloth}\mathrm{will}\mathrm{be}\mathrm{the}\mathrm{the}\mathrm{total}\mathrm{surface}\mathrm{area}\mathrm{so}, \\ \mathrm{TSA}=2\left(\mathrm{lb}+\mathrm{bh}+\mathrm{hl}\right) \\ =2\left(48\times 36+36\times 28+28\times 48\right) \\ =8160\mathrm{square}\mathrm{cm}. \end{gathered}$$