Question

The radius of a conical tent is $12m$ and the slant height is $5.6m$. Find the length of canvas required to make the tent it the width of canvas is $4m$.

• A. $106.6m$
• B. $100m$
• C. $52.8m$
• D. $105.6m$

Answer 1

The correct option is C $52.8m$

Given, radius $r=12m$, slant height $l=5.6m$ and width/breadth $B=4m$.

Here, Total surface area of the tent $=$ Area of the canvas
i.e. $\pi rl=L\times B$

$⟹$ $\frac{22}{7}\times 12\times 5.6=L\times 4$

$⟹$ $211.2=4L$

$⟹$ $L=\frac{211.2}{4}=52.8m$.

Hence, option $C$ is correct.