1.

Consider a triangle ABC and let a, b and c denote the lengths of the sides opposite to vertices A, B and C, respectivelu. Suppose a = 6, b = 10 and the triangle is 15 sqrt3. If angle ACB is obtus and if r denotes than radius of the incircle of the triangle, then the value of r^(2) is _____

Answer»

`SQRT 3`
`2 SQRT3`
3
4.5

Answer :C


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