Question

Into a circular drum of radius 4.2 m and height 3.5 m, how many full bags of wheat can be emptied if the space required for wheat in each bag is 2.1 m³?

Answer 1

Radius of the circular drum = 4.2 m
Height of the drum = 3.5 m
Number of bags = $\frac{\mathrm{volume}\mathrm{of}\mathrm{drum}}{\mathrm{space}\mathrm{required}\mathrm{for}\mathrm{each}\mathrm{bag}}$

$$\begin{gathered} =\frac{{\displaystyle \frac{22}{7}}\times 4.2\times 4.2\times 3.5}{2.1} \\ =22\times 2\times 4.2\times 0.5 \\ =92.4 \end{gathered}$$

The number of bags cannot be in decimals.
Hence, the number of bags that can be emptied is 92.