To find the shaded area, we must subtract the unshaded area from the total area.
Total Area:
To find the area of the unshaded rectangle, we must first find the length and width. To do so, subtract the smaller lengths from the larger lengths.
The length is 22cm, and the width is 21cm.
Now that we know the length and width of the unshaded rectangle, we can find the area.
Now that we know the area of the unshaded, we can subtract it from the total area to get the shaded part.
The shaded portion is 288 cm^2