The perimeter of triangle is $120 c m$ . And its sides are in the ratio $5 : 12 : 13$ . Find the area of the $△$

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Solution

Let the sides be $5 x, 12 x, 13 x$ , then:-
$5 x + 12 x + 13 x = 120$
$\Rightarrow 30 x = 120$
$\Rightarrow x = 4$
Sides $= 20, 48, 52$ .

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