A river with a depth of 2 meters and a width of 45 meters flows at a speed of 3 km/h. How much water, in cubic meters, passes into the sea every minute?

Explanation

To find the volume of water flowing per minute, first convert the velocity to meters per minute: 3 km/h equals 3000 meters per hour or 50 meters per minute. The cross-sectional area is depth × width = 2 m × 45 m = 90 m². Therefore, volume flow per minute = area × velocity = 90 m² × 50 m/min = 4500 cubic meters.