Question

Construct a triangle whose perimetre is 12cm and ratio of their side is 3:4:5

Answer 1

let the sides of triangle be AB,BC andCA,
are 3x,4x&5x respectively,perimeter is equal to sum of lengths of sides of triangle=3x+4x+5x=12
x=1 cm then the sides are3cm,4cm&5cm with these measurements we can draw triangle