What is the area
of the Boeing 747 trapezoidal planform? (**Note**: These are not
the actual dimensions. The trapezoidal planform cannot be divided into
two right triangles. **Hint**: Divide the figure into two scalene
triangles and compute their areas.)
**Step
1:** **Divide
the shape into three regions. From left to right, they are a triangle,
rectangle, and triangle.**

**The
height of the first triangle is a straight line drawn down from the
upper left-hand corner of the shape.**

**The
height of the second triangle is a straight line drawn up from the
bottom right-hand corner of the shape.**

**Step
2:** **Region
1: base = 50 ft. , height = 77 ft. (Calculate the area of this triangle.)**

**Region
2: base = 6 ft. , height = 77 ft. (Calculate the area of this rectangle.)**

**Region
3: base = 19 ft , height = 77 ft (Calculate the area of this triangle.)**

**Step
3:** **Add
the areas of the three regions. Total area = **__3118.5 ft.__^{2}