Question

Find the volume of a cylinder, the diameter of whose base is 7 cm and height being 60 cm. Also, find the capacity of the cylinder in litres.

Answer 1

$$\begin{gathered} \mathrm{Given}: \\ \mathrm{Diameter},d=7\mathrm{cm} \\ \mathrm{Radius},r=3.5\mathrm{cm} \\ \mathrm{Height},h=60\mathrm{cm} \\ \mathrm{Volume}\mathrm{of}\mathrm{the}\mathrm{cylinder},\mathrm{V}=\mathrm{\pi }{r}^{2}h \\ =\frac{22}{7}\times 3.5^2\times 60 \\ =2310{\mathrm{cm}}^3 \\ \mathrm{Capacity}\mathrm{of}\mathrm{the}\mathrm{cylinder}\mathrm{in}\mathrm{litres}=\frac{2310}{1000}\left(1\mathrm{litre}=1000\mathrm{cubic}\mathrm{cm}\right) \\ =2.31\mathrm{L} \end{gathered}$$