Answer:
The shaped region accounts for 7/18 of the area of ACIG.
Step-by-step explanation:
Refer to the attached diagram for further clarity on the problem.
Step 1
Determine the length of one side of square ABED.
We know that
AB=BE=ED=AD
The area of a square can be calculated as

where b is the side length.
We have

So we substitute


Thus,

Step 2
Calculate the area of ACIG.
The area of rectangle ACIG is determined by

Substituting the given values yields

Step 3
Determine the area of the shaded rectangle DEHG.
The area of rectangle DEHG is given by

We find 

and substitute 
Step 4
Calculate the area of shaded rectangle BCFE.
The area of rectangle BCFE equals

We see that


and substitute

Step 5
Add the areas of the shaded regions together.

Step 6
Divide the area of the shaded region by the area of ACIG.

Simplify this fraction by dividing both the numerator and denominator by 5.

Hence, the shaped region represents 7/18 of the area of ACIG.