Question

a social organisation provides milk to the students of a school daily in cylindrical glasses if diameter 7 cm . if the glass is filled with milk upto a height 12 cm .find
[i]how many litres of milk is needed to serve 1000 students

Answer 1

First let us find the amount of milk for one student = volume of cylinder of height 12 cm and diameter 7cm

V = $\pi r^{2} h$
=$\frac{22}{7} * 3.5^{2} * 12$
=264 litres

One student is provided 264 litres.
So 100 students will be provided with = 264 * 1000 = 264000 litres.