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Math Help - Percentage and square total area

  1. #1
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    Percentage and square total area

    If we increase in 30% the side of a square, how much would its area increase?

    The answer is 69%, but I have absolutely no idea about how to do that, therefore I can't post a try
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  2. #2
    Senior Member Sambit's Avatar
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    Suppose the length of each side of the square is x unit. Then what will be its length after increased by 30%? Also, what is the formula for the area of the square?
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  3. #3
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    (30%)/4 ? The formula is side x side, but we are changing one of the sides so I'm confused with that as well
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  4. #4
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    Hi lucas7,
    A square of side lenght 1 is increased to a side lenght 1.3 ( all four sides). What is the new area?


    bjh
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