Question
In the figure not drawn to scale, a rectangular piece of paper measuring 21 cm by 20 cm is folded at the Corner D in such a way that BD is 25 of its breadth. Find the area of Triangle ABD.
4 m

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In the figure not drawn to scale, a rectangular piece of paper measuring 21 cm by 20 cm is folded at the Corner D in such a way that BD is 25 of its breadth. Find the area of Triangle ABD.