Question

The length of the sides of a triangle are in the ratio4:5:3 it's perimeter 96m.find area

Answer 1

let the sides be X ,
then, 4x + 5x + 3x = 96
12x = 96
x = 8
now find area by putting in formula

Answer 2

Perimeter of triangle =
$4x + 5x + 3x = perimeter \: of \: triangle \\ 12x = 96 \\ x = \frac{96}{12} = 8 \\ now \: find \: area \: of \: triangle$