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Delta ABC is a right angled triangle wit...

` Delta ABC` is a right angled triangle with `/_A =90^0AB =b cm, AC=a cm, and BC =c cm A `circle is inscribed in this triangle. The radius of the circle,in cm, is:

A

`a + b - c`

B

`1/2 (a + b - c)`

C

`1/2 (a - b + c)`

D

`sqrt(a^2 + b^2 + c^2)`

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