CircumradiusMediumQuestion 200036
Question
The circumradius R of triangle ABC satisfies:
- AR = a/(2 sin A)
- BR = a sin A / 2
- CR = abc / 4 × Area
- DBoth A and CCorrect
Correct answer
Both A and C
Explanation
From sine rule: 2R = a/sin A so R = a/(2 sin A). Also R = abc/(4Δ) where Δ is the area. Both are correct.