Question

A conical tent is $10m$ high and the radius of its base is $24m$. Find cost of the canvas required to make the tent, if the cost of $1m^2$ canvas is $Rs70$.

Answer 1

Given height of conical tent $=10$ m.

radius of its base $=24$ m.

now

CSA of conical tent = $\pi rl=\pi r\left[\sqrt{r^2+h^2}\right]$

CSA of conical tent = $3.14\times 24\sqrt{(24{)}^2+(10{)}^2}$

CSA of cone $=1960.35$ cm${}^2$

Cost of canvas required = $70Rs/m^2$

Total cost of canvas required = $70\times 1959.36$

Total cost $=137224.77$ Rs.