A river 6 m deep and 35 m wide is flowing at the rate of 2.5 km/h, the amount of water that runs into the sea per minute is :

8750 m³

We know that,

Volume of water flowing = Depth × Width ×  Rate of flow

We have,

Depth of river = 6 m

Width of river = 35 m

Rate of flow = 2.5 km/h

According to the question,

Rate of flow in m/min = Rate of flow in km/hr × 1000/60

Rate of flow in m/min = 2.5 × 1000/60 = 125/3 m/min

Volume of water flowing = 6 ×  35 × 125/3 =  8750 m³/min