Question

the side of triangle is ratio 3 is to 5 is to 7 and parameter 300 m find the area of triangle​

Answer 1

Answer:

Ratio of sides = 3:5:7

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

Perimeter = Sum of sides

=> 300 = 3x + 5x + 7x

=> 300 = 15x

=> x = 20

So, sides of the triangle are 60m(=a), 100m(=b), 140m(=c)

semiperimeter (s) = perimeter/2 = 150m

Therefore, area of the triangle (using Heron's Formula)

=

$\sqrt{s(s - a)(s - b)(s - c)}$

Solve it and you will get area = 2500 m²

Hope this helps