Question
If the ratio of the sides of a triangle is 3:4:5 and the
area of this triangle is 216 square centimeters, then what will be the perimeter of the triangle?Solution
Let the sides of the triangle is 3x,4x and 5x. then 
6x2 =216 X =6cm Now perimeter of triangle = 3x+4x+5x =12x =12×6= 72cm
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