50 mm of rainfall was recorded during 30 min of rain in an area of 2.5 ha. The total volume of water that fell on that area during the rain would be

Correct option is B

Explanation: To determine the total volume of water that fell on an area, we use the formula:
Volume=Rainfall×Area
Step 1: Convert the units:
· Rainfall: 50 mm = 0.05 m (since 1 mm = 0.001 m)
· Area: 2.5 hectares = 25,000 m² (since 1 hectare = 10,000 m²)
Step 2: Substitute the values into the formula:
Volume=0.05 m×25,000 m2 Volume=1250 m3
This calculation indicates that the total volume of water that fell in that area during the rainfall is indeed 1,250 m³, confirming option (b) as the correct answer.
Information Booster:
· Area Conversion: A hectare is a metric unit of area equal to 10,000 square meters, commonly used in agriculture.
· Rainfall Measurement: Rainfall is typically measured in millimeters, where 1 mm of rainfall over 1 square meter equals 1 liter of water.
· Understanding water volume calculations helps in agricultural planning, especially for irrigation purposes.
· This calculation method is useful in hydrology for estimating water supply from precipitation.
· Accurate rainfall data is critical for flood management and assessing water resources.
Additional Information:
· Option (a): 625 m³ is incorrect as it reflects a misunderstanding of either the area or the depth of rainfall.
· Option (c): 18,750 m³ is a result of miscalculating the area or failing to apply the correct conversion factors.
· Option (d): 37,500 m³ represents a significant overestimation, likely due to multiplying incorrect figures or unit confusion.