1.

Three solid spheres have their radii r_(1),r_(2)andr_(3) .The spheres are melted to form a solid sphere of bigger radius of the new sphere is:

Answer»

`(r_(1)+r_(2)+r_(3))`
`(r_(1)^(2)+r_(2)^(2)+r_(3)^(2))^((1)/(2))`
`(r_(1)^(3)+r_(2)^(3)+r_(3)^(3))^((1)/(3))`
`(r_(1)^(4)+r_(2)^(4)+r_(3)^(4))^((1)/(4))`

ANSWER :C


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