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ABCD is a quadrilateral with AB = 9 cm, ...

ABCD is a quadrilateral with AB = 9 cm, BC = 40 cm, CD = 28 cm, DA = 15 cm and angle ABC is a right-angle.
What is the area of quadrilateral ABCD ?

A

`300 cm^2`

B

`306cm^2`

C

`312cm^2`

D

`316cm^2`

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