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Quadrilateral ABCD is circumscribed abou...

Quadrilateral ABCD is circumscribed about a circle. If the lengths of AB, BC, CD are 7cm, 8.5 cm and 9.2 cm respectively then the length (in cm) of DA is.

A

7.7

B

16.2

C

10.7

D

7.2

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A
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