Question 928232: Perimeter of a rectangle is increased by 30%. What will be change in area?
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Perimeter of a rectangle is increased by 30%. What will be change in area?
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If either side is increased by 30%, or is the sides are increased proportionally, the area is increased by 69%.
P = 2L + 2W
Area = L*W
1.3*1.3 = 1.69 --> a 69% increase in area
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But if the aspect ratio (L/W) is also changed, then no answer is possible.
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eg
A rectangle is 5 by 10
Area = 50 sq units, P = 30
A 30% increase --> P = 39
If L is changed to 1 and W is 39, the new area is decreased by 26%.
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This is another example of people writing math problems who are not intelligent or qualified.
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