A 2 m deep and 21 m wide river is flowing at the rate of 5 km/h. How many kilolitres of water will fall into the sea in 10 min?

Show answer & explanation

Answer: (B) 35000 kl

Explanation

In 10 minutes the water travels 5000 × 10/60 = 2500/3 m. Volume = 2 × 21 × 2500/3 = 35,000 m³ = 35,000 kilolitres.