is teh ans
5p +\Delta +\frac{75\pi}{2} ??
P is a point inside or on boundary of ΔABC having perimeter p and area Δ . R is a point in the plane of ΔABC such that PR ≤5
.The area of region in which point R lies is ??
ya thats teh ans ...i made a calc mistake
region R is the given shaded yellow region
wer i shaded everthing
the region in yellow is the required region
i.e( traingle ABC+ 3 rectangles formed of dimensions a*5 ,b*5,c*5 (wer a,b,c r sides of triangle))+3 sectors of a circle of radius 5 (subtendind 180-A ,180-B and 180-C)angles at teh centre)
well jus take the limiting condition wen P is on teh sides of the traingle ABC and then jus plot the region satisfying the given condiotion of PR≤5