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The largest sphere is carved out of a cube of a side 7 cm. Find the volume of the sphere.

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  14. A cylindrical vessel having diameter equal to its height is full of...

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  15. 50 circular plates each of diameter 14 cm and thickness 0.5 cm are ...

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  16. 25 circular plates, each of radius 10.5 cm and thickness 1.6 cm, ar...

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  17. A path 2 m wide surrounds a circular pond of diameter 40 m. How man...

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  18. A 16 m deep well with diameter 3.5 m is dug up and the earth from i...

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  19. A well of diameter 2 m is dug 14 m deep. The earth taken out of it ...

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