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What is the percentage increase in the area of a triangle , if its each side is tripled ?​

Answer»

initial SIDE be a unitsArea = (√3)a²/4 sq. unitsNow, side is TRIPLED,new side, a' = 3aNew AREA = (√3)(3a)²/4                =9×[(√3)a²/4]                =9×(initial area)Increase in area = 9×(initial area) - (initial area) = 8 ×(initial area)% increase = (increase/initial area)×100                  =[8 ×(initial area)/(initial area)]×100                   = 800 %



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