Question

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

Answer 1

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.