Lesson eLearning

A puddle covers an area of 2 m² and evaporates 3 mm of water in one day. How many litres of water have evaporated?

medium 2 marks Class 5 · EVS · Blow Hot Blow Cold
Answer
6 litres

The correct answer is 6 litres — Convert cubic metres to litres: 0.006 m³ × 1000 litres/m³ = 6 litres.

Step-by-step solution

  1. Convert the thickness from millimetres to metres: 3 mm = 0.003 m.
  2. Multiply the area by the thickness to get the volume: 2 m² × 0.003 m = 0.006 m³.
  3. Convert cubic metres to litres: 0.006 m³ × 1000 litres/m³ = 6 litres.
Common mistake: Using 1 m³ = 1 litre instead of 1000 litres

Concept tested: Evaporation volume calculation

Published · How this solution was prepared and checked

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