Answer:
138 ft²
Explanation:
There are several ways to solve this. One way is to cut the patio in half, dividing it into two trapezoids. Cut the long part of the walkway into a rectangle, then cut the remaining area into five triangles. Notice that each of these triangles is a 3-4-5 triangle.
Now we can easily find the area:
A = Rectangle + 5 Triangle + 2 Trapezoid
A = (4 × 11) + 5 (½ × 3 × 4) + 2 (½ (5 + 11) × 4)
A = 44 + 5 (6) + 2 (32)
A = 138
