In a\[\Delta ABC,\]let \[\angle C=\pi /2,\] if r is the inradius and R is the circumradius of the\[\Delta ABC,\]then \[2(r+R)\]equals
AIEEE Solved Paper-2005
A)\[c+a\]
B) \[a+b+c\]
C) \[a+b\]
D) \[b+c\]
Correct Answer:
C
Solution :
Use formulae,and We know that, \[(\because \,C={{90}^{\text{o}}})\] ...(i) and ...(ii) On adding Eqs. (i) and (ii), we get