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Twenty seven solid iron spheres, each of...

Twenty seven solid iron spheres, each of radius r and surface area S are melted to form a sphere with surface area `\ Sprimedot` Find the (i) radius `rprime` of the new sphere, (ii) ratio of `S"\ "a n d"\ "Sprimedot`

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RD SHARMA ENGLISH-SURFACE AREA AND VOLUME OF A SPHERE -All Questions
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