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A river's width is 50 meters and its average depth is 3 meters. What is the cros

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Question: A river\'s width is 50 meters and its average depth is 3 meters. What is the cross-sectional area of the river? (2022)

Options:

  1. 150 m²
  2. 100 m²
  3. 200 m²
  4. 250 m²

Correct Answer: 200 m²

Exam Year: 2022

Solution: 

Cross-sectional area = Width × Depth = 50 m × 3 m = 150 m².

A river's width is 50 meters and its average depth is 3 meters. What is the cros

Practice Questions

Q1
A river's width is 50 meters and its average depth is 3 meters. What is the cross-sectional area of the river? (2022)
  1. 150 m²
  2. 100 m²
  3. 200 m²
  4. 250 m²

Questions & Step-by-Step Solutions

A river's width is 50 meters and its average depth is 3 meters. What is the cross-sectional area of the river? (2022)
  • Step 1: Identify the width of the river, which is given as 50 meters.
  • Step 2: Identify the average depth of the river, which is given as 3 meters.
  • Step 3: Use the formula for cross-sectional area, which is Width × Depth.
  • Step 4: Substitute the values into the formula: 50 meters (width) × 3 meters (depth).
  • Step 5: Calculate the result: 50 × 3 = 150.
  • Step 6: State the final answer: The cross-sectional area of the river is 150 square meters.
  • Cross-Sectional Area Calculation – The cross-sectional area of a shape is calculated by multiplying its width by its depth.
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