IMO- Mathematics Olympiad Class 10: Questions 820 - 821 of 889
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Question number: 820
A sphere of radius is dropped into a cylindrical vessel, partly filled with water. The radius of the vessel is If the sphere is submerged completely, then the surface of the water rises by________.
Question number: 821
In the given figure, a circle touches all the four sides of a quadrilateral ABCD whose three sides are then equals________.