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The sides of a square are all increased by 3 cm. The area of the new square s 64 cm^2. How can you find the length of a side of the original square?

  • Math -

    Since the formula for the a\area of a square is "Area=(side)^2", all the sides are equal. So just substitute in.



    so the original side length is 5 cm.

  • Math -

    The area of a square is the two sides multiplied together.

    Since all sides of a square are the same, you need to find the square root of 64.

    When you find that, subtract 3 cm from it to answer your question.

  • Math -

    the ways above is probably easier, but my teacher probably wants me to solve it by factoring..

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