Number of cylindrical bottles required =
Volume of hemispherical bowl / Volume of 1 cylindrical bottle

= 2250p =2 ́2250=60. 75p 75

Example-17.The diameter of a metallic sphere is 6cm. It is melted and drawn into a long wire having a circular cross section of diameter as 0.2 cm. Find the length of the wire.

Solution : Diameter of metallic sphere = 6cm

Radius of metallic sphere = 3cm

Now, diameter of cross – section of cylindrical wire = 0.2 cm.

Radius of cross section of cylinder wire = 0.1 cm.

Let the length of wire be l cm.

Since the metallic sphere is converted into a cylidrical shaped wire of length h cm.

Volume of the metal used in wire =Volume of the sphere. Therefore, the length of the wire is 36 m.