Multiple choice

If the length of a rectangle is decreased by 40% and the breadth of the rectangle remains the same, find the percentage change in its area.

  1. 40%

  2. 82%

  3. 46%

  4. 85%

  5. 76%
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A Correct answer
Explanation

Area = L * B. New Area = (0.6 * L) * B = 0.6 * (L * B). The area decreases to 60% of the original, which is a 40% decrease.

AI explanation

The area of a rectangle is the product of its length and breadth. If the length is decreased by 40 percent, it becomes 60 percent of its original value, while the breadth remains at 100 percent. The new area becomes 0.60 times 1, which is 0.60 of the original area, indicating a 40 percent decrease in area.

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