If the length of

Here, we have given the length of two sides, i.e.

First side = 6cm and second side = 3cm

Now, let length of the third side be L

So, by Triangle Inequality Theorem

Now, we have a = 6cm and b = 3cm and we have to find c.

So,

a – b < c < a + b

⇒ 6 – 3 < c < 6 + 3

⇒ 3 < c < 9

Thus, c lies between 3 cm and 9 cm

Hence, the length of the third side (L) lies between 3cm and 9cm