If R be the circum radius and r the in radius of a triangle ABC, show that `Rge2r`

Find the area, circum-radius and in-radius of the pedal triangle.

In a triangle ABC , let angleC=(pi)/2 . If r is the in-radius and R is the circum-radius of the triangle , then 2 (r + R) is equal to

Find the circum-centre and the circum-radius of a triangle ABC formed by the vertices A(2,-2) , B (-1,1) and C(3,1).

If R be circum-radius of a Delta, then circum-radius of a pedal Delta is

If circum-radius and in-radius of a triangle ABC be 10 and 3 units respectively , then a cot A + cot B + cot C is equal to

In triangle ABC, I is the incentre of the triangle.If 'R' and 'r' be the circum-radius and in-radius, then (AI)(BI)(CI) is equal to: 1) 4r^(2)R 2) 4R^(2)r 3) r^(2)R 4) R^(2)r

Find the ratio of circum radius (R) to inradius (r) of a triangle whose sides are 4,6 and 8.