Question

Find the volume of the cylinder if the circumference of the cylinder is 132 cm and height is 25 cm.

Answer 1

Circumference = 132 cm
$$\begin{gathered} \Rightarrow 2\mathrm{\pi }r=132 \\ \Rightarrow 2\times \frac{22}{7}r=132 \\ \Rightarrow r=\frac{132\times 7}{2\times 22}=21\mathrm{cm} \end{gathered}$$
Height = 25 cm
Volume = $\mathrm{\pi }{r}^{2}h=\frac{22}{7}\times 21\times 21\times 25=34650$ cm³