Question

The triangle are in ration 3:2:5 and its perimeter is 30 .the lenght of the longest side is

Answer 1

Answer:

15 cm

Step-by-step explanation:

Let the sides be 3x, 2x and 5x.

so,

3x + 2x + 5x = 30

10x = 30

so, x=30/10

x =3

The longest side is 5x= 5 × 3 = 15 cm

Answer 2

Step-by-step explanation:

Let "X" be common in given ratio.

Then, 3x+ 2x+ 5x = 30

=} 10x= 30

=} x = 30/10

=} x= 3

Now, The sides are 3x=

$3 \times 3 = 9$

2x =

$2 \times 3 = 6$

5x=

$5 \times 3 = 15$

Here Length of longest side is 15cm