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If each side of a traingle is decreased by 10% then find the percentage decrease in the area?
5 years ago

Answers

oobleck
for similar figures, the area changes as the square of the scale factor.
So, since each side changes by 0.9, the area changes by 0.9^2 = 0.81
That is, the area decreases by 19%
5 years ago

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