francisco is building a window seat below a bay window in the shape of an isosceles trapezoid. His blueprint for the window seat is shown 5ft 4ft 1ft 1ft
The area of an isosceles trapezoid is given by the formula:
Area = (1/2) * (sum of the lengths of the parallel sides) * (height)
In this case, the blueprint shows that the lengths of the parallel sides are 5ft and 4ft, and the height is 1ft.
Therefore, the area of Francisco's window seat would be:
Area = (1/2) * (5ft + 4ft) * 1ft
Area = (1/2) * 9ft * 1ft
Area = 4.5ft²
So, the area of Francisco's window seat is 4.5 square feet.