- 14 cm
- 9 cm
- 10 cm
- 100 cm

Option 3 : 10 cm

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**Given:**

Two small sides are 6 cm and 8 cm.

**Formula used:**

Pythagoras theorem

⇒ H^{2} = P^{2} + B^{2}

**Calculation:**

Since 2 small sides are given, so third side will be hypotenuse and given 2 sides will base and perpendicular

Here, P = 6 cm, B = 8 cm

⇒ H^{2} = 6^{2} + 8^{2}

⇒ H^{2} = 36 + 64

⇒ H^{2} = 100

⇒ H = 10 cm

**∴**** Third side = 10 cm**

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