IMO Mathematics Olympiad Class 10: Questions 728  731 of 958
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Question number: 728
Question
A cylindrical vessel of diameter is partly filled with water. 400 lead balls are dropped in it. The rise in water level is The diameter of each ball is ________.
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Question number: 729
Question
A car is moving with the speed of 26 decimeter per second. If it performs 21 revolutions per second, the diameter of the wheel is ________.
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Question number: 730
Question
is a line segment of length O is the midpoint of Circle are drawn with P, O and Q as centers and radii (see figure). The area of the colored portion (in) is________.
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Question number: 731
Question
A cuboidal metal of dimensions was melted and cast into a cylinder of height Its radius is________.
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