self Maths Puzzle

p is a pt inside triangle abc at distance 8,6,12 from a,b,c find perimeter of triangle??

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self Other Question

2 circles intersect at pt ab arc made by smaller circle is 90 degree and that of larger circle is 60 degree find area of intersection how many nos divisible by 25 can be formed with 0,1,2,3,4,5,6,7 if repetition of digits not allowed??