The given figure shows a rectangle. Find the area of the shaded region within the rectangle.

Explanation

We can provide the points to the given rectangle. Let `ABCD` is the given rectangle.

Please refer to video for the complete figure.

From the figure,

Area of shaded region = Area of rectangle ABCD - (Area of triangle AEF + Area of triangle DEC)

We are given `AE = ED`

Also, `AD = 12` cm

Now, `AE =ED = (AD)/2 = 12/2 = 6` cm

So, Area of `Delta AEF(A_1) = 1/2**b**h`

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