Question

the sides of a triangular plot are in the ratio of 3 : 5 : 7: and its perimeter is 300 m find its area give answer faster

Answer 1

let the sides be 3x,5x and 7x respectively.
Perimeter = sum of sides
300=3x+5x+7x
300=15x
x=20
Therefore, 3x=60m ,5x=100m ,7x=140m

area=√s(s-a)(s-b)(s-c)
=√150(150-60)(150-100)(150-140)
=√150×90×50×10
Area=1500√3 sq.m