Question

perimeter of triangle is 16 cm and sides are in the ratio 3 is to 4 is to 5 what is the length of the side​

Answer 1

Step-by-step explanation:

Let the length of sides be 3x, 4x, 5x

So, 3x+4x+5x = 16

or, 12x = 16

or, x = 16/12

or, x = 4/3

The length of the 1st side = 4/3×3= 4cm

The length of the 2nd side = 4/3×4= 16/3cm

The length of the 3rd side = 4/3×5= 20/3cm

Answer 2

Answer:

ratio of triangle is 3:4:5

let the a = 3x ,b = 4x, c = 5x

perimeter of the triangle = 16 cm

a+b+c = 16 cm

3x + 4x + 5x = 16 cm

12x = 16 cm

x = 16/12 cm

x = 4/3

hence, a = 3x = 3×4/3 = 4cm

b = 4x = 4×4/3 = 16/3 = 5.33 cm (approx.)

c = 5x = 5×4/3 = 20/3 = 6.66 cm (approx.)