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Metallic spheres of radii 6 cm, 8 cm ...

Metallic spheres of radii 6 cm, 8 cm and 10 cm respectively, are melted to form a single solid sphere. Find the radius of the resulting sphere.

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RD SHARMA ENGLISH-SURFACE AREAS AND VOLUMES-All Questions
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  13. A 20 m deep well with diameter 7 m is dug and the earth from diggin...

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  14. A well, whose diameter is 7m, has been dug 22.5 m deep and the earth d...

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