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1.
If the length of a rectangle is increased by 20% and the width is decreased by 20%, then the area is :
- A. decreased by 20%
- B. decreased by 20%
- C. decreased by 20%
- D. decreased by 20%
Answer: Option B
Explanation:
We can let L = the original length
and W = the original width
Thus, the original area of the rectangular is LW and the new area is 1.2L× 0.8W = 0.96LW
So, the area is decreased by 4%
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