geometry

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find side a if side b is 12in and side c is 18

  • geometry -

    I am assuming this nis a rt triangle.

    a^2 + b^2 = c^2.

    a^2 + (12)^2 = (18)^2,
    a^2 = (18)^2 - (12)^2 = 180,
    a = 13.4 in.

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