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Easy

Question

# A Solid metal cylinder of radius 14 cm and height 21 cm is melted down and recast into spheres of radius 3.5 cm . Calculate the number of spheres that can be made ?

Hint:

### Volume of the sphere is

Volume of a cylinder is .

## The correct answer is: 72

### Explanation:

- We have given a Solid metal cylinder of radius 14 cm and height 21 cm is melted down and recast into spheres of radius 3.5 cm
- We have to find the number of spheres that can be made.

The radius of solid cylinder is 14cm and height 21cm and the radius of new sphere3.5cm is

The volume of cylinder will be

Volume of New sphere is

=179.66

Number of spherical ball will be

=

=

= 72.002

Therefore the number of sphere will be 72.

Volume of New sphere is

Number of spherical ball will be

Therefore the number of sphere will be 72.

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