Q. 94.6( 16 Votes )

Three spheres mad

Answer :

Given:


Radius of the three small spheres are 3cm, 4cm and 5cm.


Formula used:


Let the radius of the new sphere be r.


1. Volume of 3cm radius sphere + Volume of 4cm radius sphere + Volume of 5cm radius sphere = Volume of new sphere


2. Volume of sphere = (4/3)×π×r3




(3)3+(4)3+(5)3 = r3


27 + 64 +125 = r3


216 = r3


r = 6


Radius of the new sphere will be 6cm.


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