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Two cylindrical vessels with radii 15...

Two cylindrical vessels with radii 15 cm and 10 cm and heights 35 cm and 15 cm respectively are filled with water. If this water is poured into a cylindrical vessel 15 cm in height, then the radius of the vessel is (a) 17.5 cm      (b) 18 cm      (c) 20 cm       (d) 25 cm

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