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A farmer has a rectangular field of dimensions 50 m by 30 m. If he wants to irri

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Question: A farmer has a rectangular field of dimensions 50 m by 30 m. If he wants to irrigate it with water from a river, how much water is needed to cover the field to a depth of 0.1 m? (2023)

Options:

  1. 150 m³
  2. 300 m³
  3. 500 m³
  4. 100 m³

Correct Answer: 150 m³

Exam Year: 2023

Solution: 

Volume of water needed = Area × Depth = (50 m × 30 m) × 0.1 m = 150 m³.

A farmer has a rectangular field of dimensions 50 m by 30 m. If he wants to irri

Practice Questions

Q1
A farmer has a rectangular field of dimensions 50 m by 30 m. If he wants to irrigate it with water from a river, how much water is needed to cover the field to a depth of 0.1 m? (2023)
  1. 150 m³
  2. 300 m³
  3. 500 m³
  4. 100 m³

Questions & Step-by-Step Solutions

A farmer has a rectangular field of dimensions 50 m by 30 m. If he wants to irrigate it with water from a river, how much water is needed to cover the field to a depth of 0.1 m? (2023)
  • Step 1: Find the area of the rectangular field. Use the formula: Area = Length × Width.
  • Step 2: Substitute the dimensions of the field into the formula: Area = 50 m × 30 m.
  • Step 3: Calculate the area: Area = 1500 m².
  • Step 4: Determine the depth of water needed, which is given as 0.1 m.
  • Step 5: Calculate the volume of water needed using the formula: Volume = Area × Depth.
  • Step 6: Substitute the area and depth into the formula: Volume = 1500 m² × 0.1 m.
  • Step 7: Calculate the volume: Volume = 150 m³.
  • Area Calculation – Understanding how to calculate the area of a rectangle using the formula length × width.
  • Volume Calculation – Applying the formula for volume, which is area multiplied by depth, to find the total volume of water needed.
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