Question

The sides of triangle are in the ratio 3.5.7 and its perimeter is 300 m. Find its area.​

Answer 1

Answer:

Let the sides be 3x,5x,7x

P=300m

3x+5x+7x=300

15x=300

x= 300/15

   =20m

So the sides are 60m , 100m , 140m

s=300/2 = 150m

Area= √s(s-a)(s-b)(s-c)

         =√150(150-60)(150-100)(150-140)

         =√150x90x50x10  

         =1500√3m²