###### Exercise 35

A trapezoid’s area can be calculated by the formula \(A=\frac{1}{2}(b_1+b_2)h\text{,}\) where \(A\) stands for area, \(b_1\) for the first base’s length, \(b_2\) for the second base’s length, and \(h\) for height.

Find the area of the trapezoid below.