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Consider a Delta ABC and let a,b and c ...

Consider a `Delta ABC ` and let a,b and c denote the lengths of the sides opposite to vertices A, B, and C, respectively. `a=6, b=10` and the area of the triangle is `15sqrt3. If angle ABC` is obtuse and if r denotes the radius of the incircle of the triangle, then `r^(2)` is equal to .........

A

4

B

5

C

6

D

3

Text Solution

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The correct Answer is:
D
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