The sides of a triangular plot are in the ratio of 3:5:7 and its perimeter is 300m. Find its area

The sides of a triangular plot are in the ratio of 3:5:7 and its perim

1.	The sides of a triangular plot are in the ratio of 3:5:7 and its perimeter is 300m. Find its area
Answer» 3x+5x+7x=300m15x=300mx= 20ma=3x=60b=5x=100c=7x=140s=p/2=300/2=150ar= √s(s-a)(s-b)(s-c)=√150150-60150-100150-140=√150905010=1500√3m² Its easy.First you have to take 3x+5x+7x equal to 180 degree.then you to find the value of x.Then you have to find the sides of the triangle by multiplying 3,5,7 to the value of x.By using heron formula you can find the area of the triangle