Question

Side if a triangle is 3:4:5 perimeter is84cm find the length of its sides

Answer 1

Answer:

perimeter= 84cm

As, perimeter of a triangle is the sum of all sides

3x+4x+5x=84cm.

12x=84cm

Answer 2

Answer:

side =21 cm, 28cm, 35cm

Step-by-step explanation:

u can use semiperimter

so sum of three sides of a given ratio / 2 will b equal to the half of the perimeter given.

n then u can find the value of x of the ratio