Question

The sides of a triangle are in the ratio 12: 17: 25 and its perimeter is 540cm. The area is:

a) 1000 sq.cm.
b) 5000 sq.cm.
c) 9000 sq.cm.
d) 8000 sq.cm.


Class9th

Answer 1

Answer:

⇒Let x be common ratio

∴ Sides of triangle will be: 12x,17x and 25x

⇒Perimeter =540 cm(given)

⇒12x+17x+25x=540 cm, 

⇒54x=540 cm

⇒x=10 cm

∴ Sides of triangle: a=120,b=170,c=250 cms

⇒2S=540

⇒S=270 cm

$A= \sqrt{s(s−a)(s−b)(s−c)}$

    =270(270−120)(270−170)(270−250)  cm2

    =270×150×100×20 cm2

A=9000 cm2

Answer 2

Answer:

"first answer is correct..!!"

Step-by-step explanation:

Hello

How are you!!