If a river's width increases from 50 meters to 100 meters while maintaining the

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What’s inside this PDF?

Question: If a river\'s width increases from 50 meters to 100 meters while maintaining the same depth of 3 meters, what is the change in cross-sectional area? (2022)

Options:

150 m²
200 m²
300 m²
400 m²

Correct Answer: 300 m²

Exam Year: 2022

Solution:

Initial area = 50 m × 3 m = 150 m²; Final area = 100 m × 3 m = 300 m²; Change = 300 m² - 150 m² = 150 m².

If a river's width increases from 50 meters to 100 meters while maintaining the

Practice Questions

If a river's width increases from 50 meters to 100 meters while maintaining the same depth of 3 meters, what is the change in cross-sectional area? (2022)

150 m²
200 m²
300 m²
400 m²

Questions & Step-by-Step Solutions

If a river's width increases from 50 meters to 100 meters while maintaining the same depth of 3 meters, what is the change in cross-sectional area? (2022)

Step 1: Identify the initial width of the river, which is 50 meters.
Step 2: Identify the depth of the river, which is 3 meters.
Step 3: Calculate the initial cross-sectional area using the formula: Area = Width × Depth. So, Area = 50 m × 3 m = 150 m².
Step 4: Identify the final width of the river, which is 100 meters.
Step 5: Calculate the final cross-sectional area using the same formula: Area = Width × Depth. So, Area = 100 m × 3 m = 300 m².
Step 6: Find the change in cross-sectional area by subtracting the initial area from the final area: Change = Final Area - Initial Area. So, Change = 300 m² - 150 m² = 150 m².

Cross-Sectional Area Calculation – Understanding how to calculate the area of a rectangle using width and depth.
Change in Area – Determining the difference between two areas to find the change.

If a river's width increases from 50 meters to 100 meters while maintaining the

What’s inside this PDF?

If a river's width increases from 50 meters to 100 meters while maintaining the

Practice Questions

Questions & Step-by-Step Solutions

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