Well the area of a trapezoid is defined by the following formula: A = where b₁ and b₂ are the bases of the trapezoid and h is the height of the trapezoid.
Let's plug in what we know into this formula: h = 7 the perpendicular distance between the two bases b₁ = 15 the shorter parallel side b₂ = 25 the longer parallel side made up of 4 + 15 + 6 so, A =
This is in square units of measure of course, so 140 in²