Question

the unequal side of an isosceles triangle is 3cm more than one its equal sides if the perimeter of the triangle is18cm find the length of the three sides​

Answer 1

Solution:

Let the equal side be 'x'.

So:

The unequal side will be: x +*3

Now:

$\implies$ x + x + (x+3) = 18

$\implies$ 3x + 3 = 18

$\implies$ 3x = 15

$\implies$ x = 5

Now:

We got that the equal side is 5 cm.

So:

$\implies$ x + 3

$\implies$ 5 + 3

$\implies$ 8

Therefore:

The sides of the triangle are 5 cm, 5 cm and 8 cm.

Answer 2

Answer:

Let the equal side be 'x'.

So:

The unequal side will be: x +*3

Now:

x + x + (x+3) = 18

3x + 3 = 18

3x = 15

x = 5

Now:

We got that the equal side is 5 cm.

So:

x + 3

5 + 3

8

Therefore:

The sides of the triangle are 5 cm, 5 cm and 8 cm.