JEE Main 202118 Mar, Evening shiftMathematicsMediumCoordinate Geometry478× since 2002
Let the centroid of an equilateral triangle ABC be at the origin. Let one of the sides of the equilateral triangle be along the straight line x + y = 3. If R and r be the radius of circumcircle and incircle respectively of ABC, then (R + r) is equal to :