The given shape is a trapezoid.
It is required to find the area.
Recall that the area of a trapezoid with base lengths a and b, and height, h is given as:
[tex]A=\frac{1}{2}(a+b)h[/tex]
Substitute a=8.4, b=4.2, and h=3.6 into the formula:
[tex]A=\frac{1}{2}(8.4+4.2)3.6=\frac{1}{2}(12.6)(3.6)=22.68\text{ yd}^2[/tex]
The Area is 22.68.
The unit for the area is yd².
