1.

Two solid right circular cones have the same height and radii r_(1)cm and r_(2) cm. They are melted and recast into a right circular cylinder of the same height. Then, the radius of the cylinder is ......... cm.

Answer»

`(r_(1)^(2)+r_(2)^(2))/(3)`
` SQRT((r_(1)^(2)+r_(2)^(2))/(3))`
`sqrt(r_(1)^(2)+r_(2)^(2))`
`sqrt(r_(1)r_(2))`

Answer :A::B::C


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