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In the given figure, from a rectangular ...

In the given figure, from a rectangular region ABCD with `AB=20cm` a right triangle AED with `AE=9cm` and `DE=12cm`, is cut off. On the other end, taking BC as diameter, a semicircle is added on outside the region. The area of the shaded region.
[Use `pi=3.14`]

A

`84.55 cm ^(2)`

B

`72.63 cm ^(2)`

C

`84.55 cm `

D

`72.63 cm `

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