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A square has a side of length 2 inches. How long is a side on a square that has twice the area?

please answer and explain

  • math -

    since a = s^2
    2a = (√2 s)^2

    so, the side grows by √2

    check:
    if a = 2, s = √2
    if a = 4, s = 2 = √2 * √2

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