Question

The sides of a triangle are in the ratio 12:17:25 and it's perimeter is 540 cm find its area class9 exercise 12.1 question number 5 please if you know the answer so please tell plz plz

Answer 1

Answer:

12x+17x+25x=540

54x=540

x=540/54=10

12x =12×10=120

17x=17×10=170

25x=25×10=250

s=perimeter/2=540/2=270

By heron's formula

area of triangle=√(s(s-a)(s-b)(s-c))

=√(270(270-120)(270-170)(270-250))

=√(270(150)(100)(20))

=√81,000,000

=9,000 cm²

plz brainlist me if u like it and understand it

Answer 2

Answer:

9000cm²

Step-by-step explanation:

Suppose common ratio btwn sides of triangle = a

So, sides are 12a,17a,25a.

Perimeter =540

12a+17a+25a=540

a=10

Then, sides are 120,170,250.

S=Perimeter /2=540/2=270

Area of triangle =√¯¯¯¯¯¯¯¯¯¯s(s-a) (s-b) (s-c)

Substitute the values..

Area =9000 cm²