Maths-
General
Easy
Question
Sides of a triangle are in the ratio 12 : 17 : 25 and its perimeter is 540 cm. Find its area.
Hint:
Let sides of triangle be 12x , 17x and 25x
The correct answer is: 9000 cm2
It is given that Perimeter of triangle = 540 cm
⇒ 12x + 17x + 25x = 540
⇒ 54x = 540
⇒ x = 10
So, a = 120 cm , b = 170 cm , c = 250 cm
Using Heron’s formula,
Area of triangle = 
where s = 
s = 
= 270
Area of triangle
= 
= 
= 9000 cm2
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