Question

water is being pumped in to a conical reservoir if height 15 metres and radius 6 metres, at the rate of 3 cubic metres per minute. How fast the water level rise from a depth of 2.5 m

Answer 1

The volume of a cone is 1/3 pi × r×h. So the volume of the conical reserviour is (1/3×3.14×36×15)m3 or 565.2m3. So it would rise in 187.6 minutes.