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In the following figure, PQR and XYZ are identical isoceles triangles.

PX ⊥ QR

XC = 1/2 XR

PX is twice the width of the rectangle.

The area of rectangle ABCD is 50 cmand its length to width ratio is 2:1

Find the area of the unshaded portion.

The correct answer is : 125
cm^2