Question

The sides of a triangle are in the ratio 1:3:5 and its perimeter is 27cm.The length of its longest side is​

Answer 1

Answer:

Step-by-step explanation:

Let the ratios be 1x,3x,5x

Perimeter of triangle=1x+3x+5x

27=9x

x=27/9

x=3

Therefore the length of the longest side is 5x=5 X 3=15cm

Answer 2

Answer:

Longest side is 15cm.

Step-by-step explanation:

Let the sides of the triangle be 1x , 3x and 5x.

Perimeter of the triangle = Sum of all the sides

27 = 1x + 3x + 5x

27 = 9x

27/9 = x

3 = x

Sides of triangle :-

1x = 1 × 3

= 3 cm

3x = 3 × 3

= 9 cm

5x = 5 × 3

= 15 cm

Thus the longest side measures 15 cm.