If R is the circum radius of `DeltaABC`, then A `(DeltaABC)`= . . .

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

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

The in-radius of pedal Delta of a DeltaABC is

The in-radius of pedal Delta of a DeltaABC is

(i) The length of the circum-radius of the right-angled DeltaABC is 4 cm. Find its length of hypotenuse.

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

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