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Lesson eLearning

A pond of length 40 m and breadth 25 m loses 6 mm of water from its surface in one day due to evaporation. How many litres of water are lost that day?

medium 2 marks Class 5 · EVS · Every Drop Counts

Answer

6000 litres

The correct answer is 6000 litres — State result

Step-by-step solution

Convert dimensions to area: $40 m \times 25 m = 1000 m^{2}$
Convert 6 mm to metres: $6 mm = 0.006 m$
Compute volume evaporated: $1000 m^{2} \times 0.006 m = 6 m^{3}$
Convert cubic metres to litres: $6 m^{3} \times 1000 = 6000$ litres
State result

Common mistake: Not converting millimetres to metres before multiplying

Concept tested: Evaporation volume from area and depth

Published 16 October 2026 · How this solution was prepared and checked

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