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From a piece of cardboard, in the shape ...

From a piece of cardboard, in the shape of a trapezium ABCD and AB `||` CD and `/_BCD=90^@` quarter circle is removed. Given AB = BC = 3.5 cm and DE=2 cm. Calculate the area of the remaining piece of the cardboard. (Taken `pi` to be `22/7`)

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The correct Answer is:
`6 . 125 cm^(2)`
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