Answer:
Step-by-step explanation:
The area formula for a trapezoid is
[tex]A=\frac{1}{2}h(b_1+b_2)[/tex]
A is 186, h is 12, b1 is 14:
[tex]186=\frac{1}{2}(12)(14+b)[/tex] and
186 = 6(14 + b) and
186 = 84 + 6b and
102 = 6b so
b = 17
The other base is 17