Maths-
General
Easy
Question
In 
then 
- s4
- b2c2
Hint:
The angles of the triangle ABC are denoted by A, B, C and the corresponding opposite sides by a, b, c.
The correct answer is:
s denotes the semi-perimeter of the triangle ABC, ∆ its area and R the radius of the circle circumscribing the triangle ABC i.e., R is the circum-radius.
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