A river 3m deep and 40m wide is flowing at the rate of 2km per hour. How much water will fall into the sea in a minute?

Explanation

To solve the problem, we need to find out how much water flows into the sea from the river in one minute. We will follow these steps:

### Step 1: Convert the speed of the river from km/h to m/min
The speed of the river is given as 2 km/h. We need to convert this to meters per minute.

- **Conversion**:
\[
2 \text{ km/h} = 2 \times 1000 \text{ m/h} = 2000 \text{ m/h}
...