Answer:
Labeled the diagram as shown below.,
In rectangle ABCD:
Area of the rectangle(A) is given by:
From the diagram:
AB = DC = 8 in. and AD = BC = 7 in.
⇒Length = 7 in. and width = 8 in.
then;
Next, find the area of triangle OAE:
In triangle OAE
Base = AE = 3 in.
Height = OA = 4 in.
then;
Area of this composite figure = area of rectangle ABCD+ area of triangle OAE
⇒Area of this composite figure = 56 +6 = 62 square inches.
therefore, area of this composite shape is, 62 in²