2. Find the area of the shaded region in the following figures:
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Area of shaded region
= area of square - 4×area of triangle
= (side) ² - 4×1/2 ×base ×height
= (20+5)² - 4× 1/2 ×20×5
= (25)²- 200
=625-200
= 425 sq. units
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