Question

The sides of a triangular plot are in the ratio of 5:7:9 and its perimeter is 300m. Find its

area.​

Answer 1

$\huge \fbox \red{❥ Answer}$

Let, 1 side be  = 3x

  2 side be  = 5x

  3 side be  = 7x

According to question, 3x+5x+7x=300

⟹x=20

So, sides are 60,100,140

Area = √s(s−a)(s−b)(s−c)

s = semi − perimeter 

 s=150,  a=60,  b=100,  c=140

Area=√150(150−60)(150−100)(150−140)

⟹√150(90)(50)(10)

⟹1500√3 m²

• I Hope it's Helpful.