Published by:
CGP EDU Academic Team
Published on: August 13, 2026
In a Δ ABC, let ∠ C = 
. If r is the inradius and R is the circumradius of the triangle, then 2(r + R) is equal to –
Text Solution
Verified by ExpertsThe correct answer is:
A
Let C be origin, M 
R 2 = MC 2 = 
(a 2 + b 2 ) = 
c 2 ⇒ R = c/2
r = (s – c) tan C/2 = (s – c) tan π /4 = s – c
⇒ 2(r + R) = 2r + 2R = 2s – 2c + c
= a + b + c – 2c + c
= a + b.
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