Given: CSA of a cylindrical pillar is 264 m²

Volume of cylindrical pillar id 924 m³

CSA of a cylinder is : 2πrh (here r and h are radius and height respectively)

∴ 2πrh = 264 …. 1

Volume of the Cylinder is : πr²h (here r and h are radius and height respectively)

∴ πr²h = 924 …. 2

Divide eq –2 by eq –1

We get,

=

⇒ = ⇒ r = 7

∴ r = 7

Substitute ‘r’ in eq –1

∴ 2 × π × 7 × h = 264

⇒ 2 × × 7 × h = 264

⇒ 44 × h=264

⇒ h = = 6 cm

∴ height of the cylindrical pillar is 6 cm