Correct Answer - Option 3 : 120 cm

^{3}
**Given:**

Area of three faces of a cuboid,

20 cm2, 30 cm2 and 24 cm2

**Concept Used:**

Adjacent faces of cuboids are rectangular in shape.

**Formula Used:**

Volume of a cuboid is (l × b × h)

Where,

l is length, b is breadth, and h is height

**Calculation:**

Let the length, breadth, and height of a cuboid be l, b, and h.

According to the question,

⇒ l × b = 20 cm^{2}

⇒ b × h = 30 cm^{2}

⇒ l × h = 24 cm^{2}

Multiplying above 3 results,

We get,

⇒ (l × b) × (b × h) × (l × h) = (20) × (30) × (24)

⇒ l^{2}b^{2}h^{2} = 14,400

Taking square root on both sides,

⇒ l × b × h = 120

**∴ Volume of a cuboid is 120 cm**^{3}.