Question

the length of sides of a triangle are in ratio 3:4:5 and it's perimeter is 180cm.find its area ​

Answer 1

Answer:

Step-by-step explanation:

let the first side be 3x

          second side be 4x

          third side be 5x

now,,

        3x + 4x +5x = 180

        12x = 180

       x = 180/12

        x = 15 cm

first side = 3x =3 * 15 = 45 cm

second side = 4x = 4* 15 =60 cm

third side = 5x = 5* 15 = 75 cm