Question

A factory is designed as shown in the figure. There are 150 people working in the factory and each occupy a space of 0.5 $m^3$. Find the maximum volume available to place machinery in the factory. (Take $\pi =\frac{22}{7}$)

• A. 5880m³
• B. 8960m³
• C. 8885m³
• D. 5805m³

Answer 1

The correct option is D

5805m³

The factory is a combination of a cuboid of dimensions 40m x 14m x 5m and half a cylinder of radius 7m and height 40m.

Volume of the factory $=lbh+\frac{1}{2}\pi r^{2}h$

= $40\times 14\times 5+\frac{1}{2}\pi (7{)}^2\times 40$.

= 5880$m^3$

Volume occupied by people = $150\times 0.5=75m^3$

Maximum volume permissible for machinery = 5805$m^3$.