Correct Answer - Option 1 : 14 cm

**Given:**

Radius of small balls = 7cm

Radius of cylindrical jar = 14cm

**Formula:**

Volume of cylinder = πr^{2}h

Volume of sphere = 4/3 × πr^{3}

**Calculation:**

Volume of six spherical balls = Volume of cylindrical jar

Volume of six spherical balls = 6 × 4/3 × 22/7 × 7^{3}

Volume of cylindrical jar = 22/7 × 14^{2} × h

Then,

⇒ 6 × 4/3 × 22/7 × 7^{3 }= 22/7 × 14^{2} × h

⇒ h = 14 cm

**∴ Height of cylindrical jar is 14cm.**