Question

A river 2m deep and 45m wide Is flowing at the rate of 3km per hour. Find the amount of water in cubic metres that runs into the sea per minute.

Answer 1

Given that: Rate of water flow = 3km/h= (3000/60) m/min =50 m/min

Depth (h) of river = 2 m

Width (b) of river = 45 m

Volume of water flowed in 1 min = Rate of water flow * depth of river * width of river = 50*2*45 = 4500 m3

Hence, in 1 minute, 4500 m3 water will fall in the sea.