Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Given an isosceles triangle, whose one angle is 120° and radius of its incircle is 
unit. Then the area of the triangle in sq. units is
A
7 + 12 
B
12 – 7 
C
12 + 7 
D
4 π
Text Solution
Verified by ExpertsThe correct answer is:
C
Δ = 
. b . b . sin 120º = 
b 2 .........
Also 
⇒ a = 
.........
and Δ = 
and s = 
(a + 2b)
Δ = 
(a + 2b) ..........
From , and , we get Δ = 
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