Question

Question No. 4 What is the volume (in m3) of the biggest possible cylindrical pipe formed by folding the sheet as shown in the figure? 8 m​

Answer 1

Volume of cylinder is $\pi r^2h$

Here, $2\pi r=5$

$\therefore r=\frac{5}{2\pi} \text{and} h= 8$

Volume of cylinder $= \pi \times \frac{25}{4\pi\pi}\times {8}$

$= \frac{25}{\pi}\times {2}$

$=\frac{50}{3.14}$

$= 15.92 m^3$