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Quantitative Aptitude :: Area - Discussion

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Choose the correct option.

What is the percentage of increase in area of a triangle if its sides are doubled?

A300%

B200%

C100%

D250%

Answer: Option (Login/Signup)

Show Explanation

In similar triangles, a ratio of areas is equal to a ratio of the square of corresponding sides.

Area 2/Area 1 = (side 2/side 1)²



When sides are doubled, the area of the new triangle will always be 4 times the original, the change in area will be 3 times. Hence the % change will always be 300% irrespective of the type of triangle.

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