ANSWER

Step-by-step explanation
The figure described in the question is the one in the attachment.
The area of the square portion is

where

is the length of the sides of the square.
This implies the area of the square portion is


The area of the triangular portion is

The base of the triangle is 5 units and the heigh is 4 units.
This implies that, area of the triangle is


Putting the two areas together, we obtain,
Area of figure to be

