[" In "/_ABC,r=1,R=4,Delta=8" then the ve "],[" of "ab+bc+ca=]

In Delta ABC,r=1,R=4,Delta=8 then the value of ab+bc+ca=

In Delta ABC, if r-1,R=4, Delta =8 , then ab+bc+ca=

If (2,1),(-1,-2),(3,3) are midpoints of sides BC,CA,AB of Delta ABC then the equation of AB is

In a triangle ABC, if AB=3, BC=4, CA=5. Then the surface area of the sphere having a radius equal to the inradius of the triangle is.

Let P, Q, R be the mid-points of sides AB, BC, CA respectively of a triangle ABC. If the area of the triangle ABC is 5 square units, then the area of the triangle PQR is

For a triangle ABC, R = (5)/(2) and r = 1 . Let D, E and F be the feet of the perpendiculars from incentre I to BC, CA and AB, respectively. Then the value of ((IA) (IB)(IC))/((ID)(IE)(IF)) is equal to _____

For a triangle ABC, R = (5)/(2) and r = 1 . Let D, E and F be the feet of the perpendiculars from incentre I to BC, CA and AB, respectively. Then the value of ((IA) (IB)(IC))/((ID)(IE)(IF)) is equal to _____

For a triangle ABC, R = (5)/(2) and r = 1 . Let D, E and F be the feet of the perpendiculars from incentre I to BC, CA and AB, respectively. Then the value of ((IA) (IB)(IC))/((ID)(IE)(IF)) is equal to _____

AL, BM and CN are perpendicular from angular points of a triangle ABC on the opposite sides BC, CA and AB respectively. Delta is the area of triangle ABC, (r ) and R are the inradius and circumradius. Radius is the circum circle of Delta LMN is