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In triangle A B C , let /c=pi/2dot If r ...

In triangle `A B C ,` let `/_c=pi/2dot` If `r` is the inradius and `R` is circumradius of the triangle, then `2(r+R)` is equal to (a) `a+b` (b) `b+c` (c) `c+a` (d) `a+b+c`

A

a+b

B

b+c

C

c+a

D

a + b +c

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The correct Answer is:
A
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