SSC CGL Tier II 25 Oct 2015 Paper 1

Question : 62 of 100

Marks: +1, -0

If a hemisphere is melted and four spheres of equal volume are made, the radius of each sphere will be equal to

Solution:

(3) Volume of hemisphere

=2/3πR^3

cu. units
Volume of newphere

=4/3πr^3

cu. units
According to the question,

2/3πR^3 =4×4/3πr^3

⇒

R^3=8r^3

⇒

R=2r

units

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