Question

find a, B and C if the perimeter of a triangle is 36 cm and its side are in the ratio A : B : C = 3 : 4 : 5​

Answer 1

Answer:

perimeter of triangle = a+b+c

36cm= 3x+4x+5x

36cm=12x

3cm=x

therefore , a= 9cm

b= 12cm

c= 15cm

follow me

Answer 2

Answer:

Step-by-step explanation:

let the common multiple between the sides be x

thus

sides= A=3x

           B= 4x

           C=5x

perimeter=sum of all three sides of the triangle

thus,

36=3x+4x+5x

36=12x

x=36/12

x=3

THUS,

side A= 3x=3*3=9 cm

side B=4x=4*3=12 cm

side C=5x=5*3=15 cm