Question

A classroom is 8 m long, 7 m broad and 3 m high. If there are 42 children in this class, what is the average volume of air available to each child?

Answer 1

Length of the classroom = 8 m
Breadth of the classroom = 7 m
Height of the classroom = 3 m
Total volume of air in the classroom = Volume of the classroom = length × breadth × height
= 8 × 7 × 3 m³
= 168 m³
∴ Total volume of air in the classroom is 168 m³ .
Average volume of air available to each child$=\frac{\mathrm{Total}\mathrm{volume}\mathrm{of}\mathrm{air}\mathrm{in}\mathrm{the}\mathrm{classroom}}{\mathrm{Total}\mathrm{children}\mathrm{in}\mathrm{the}\mathrm{class}}$
$=\frac{168}{42}{\mathrm{m}}^3$
= 4 m³
∴ Average volume of air available to each child is 4 m³.