Answer:
The area of the window is of 840 square inches.
Step-by-step explanation:
To find the area of an trapezoid, we need to add the sum of the bases, multiply by the height, and then divide by 2.
Matematically:
In which and
are the bases and h is the height.
In this question:
All the measures in inches, so the area is in square inches.
The area of the window is of 840 square inches.