The sides of a triangular plot are in the ratio of `3:5:7`and its peri – InterviewSolution

1.	The sides of a triangular plot are in the ratio of `3:5:7`and its perimeteris 300 m. Find its area.
Answer» a:b:c=3:5:7 a=3x=60 b=5x=100 c=7x=140 a+b+c=300 3x+5x+7x=300 15x=300 x=20 Semiperemeter=300/2=150 Herons formula area=`sqrt(s(s-a)(s-b)(s-c))` =`sqrt(150(150-60)(150-100)(150-140))` =`1500sqrt3m^2`

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