geometry
posted by Anonymous .
find side a if side b is 12in and side c is 18

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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