Answer :

Given: Diameter of the Solid Sphere is: 6 cm


Height of the Cylinder is: 45cm


Diameter of the Cylinder is: 4cm


Volume of Solid Cylinder is: π × r2 × h (here r is radius and h is height)


Volume of the Solid Sphere is: × π × r3 (here r is the radius of the Sphere)


Let v1 be the volume of given Cylinder


v1 = π × 22 × 45 cm3 (4cm is diameter, 2cm is the radius of cylinder)


Let v2 be the volume of Solid Sphere.


V2 = × π × 33 cm3 (6cm is the diameter, 3cm is the radius of the Sphere)


We know that when a object is moulded from one shape to other its volume does not change.


Let n be the number of Solid Sphere of diameter 6cm required.


v1=n × v2 (volume of n Spheres = volume of Cylinder)


That is,


π × 22 × 45 =n × × π × 33


n = = = = 5


That is 5 Solid Spheres of diameter 6 cm can be formed by the Solid Cylinder of height 45 cm and diameter 4 cm.

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