Question

Sides of a triangle are in the ratio 3:4:5 and perimeter is 360 cm.what will be it's longest side​

Answer 1

Answer:

Let first side of triangle be 3x

Second side be 4x

Third side/longer side be 5x

a/q perimeter of triangle= Sum of all sides

360= 3x+4x+5x

360=12x

360÷12= x

x=30

longer side= 5x= 5×30=150

Answer 2

$\sf \: As \: we \: know \: \\ \\ \sf \: Perimeter \: of \: triangle = Sum \: of \: all \: sides \\ \\ \sf 3x + 5x + 4x = 360 \\ \\ \sf12x = 360 \\ \\ \sf \: x = \frac{360}{12} \\ \\ \sf x = 30 \\ \\ \sf \: So, \: sides =90,150,120$

Longest side =150cm