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Maths TNSB Mentoring
Class 10 Crash course
Mensuration
Annual revision III
3.
PYQ - Find the number of spheres
Question:
2
m.
A metallic sphere of radius \(25 \ cm\) is melted and recast into small spheres each of radius \(5 \ cm\).
How many small spheres can be made
?
Answer
:
Number of small spheres is given by:
\(\frac{\text{Volume of big metallic sphere}}{\text{Volume of small sphere}}\)
\(\frac{\text{Volume of small sphere}}{\text{Volume of big metallic sphere}}\)
\(\text{Volume of small sphere} \times \text{Volume of big metallic sphere}\)
Therefore,
the number of small spheres
\(=\)
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