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प्रश्न
A cube of 9 cm edge is immersed completely in a rectangular vessel containing water. Ifthe dimensions of the base are 15 cm and 12 cm, find the rise in water level in the vessel.
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उत्तर
Volume of cube `=S^3=9^3=729cm^3`
Area of base `lxxbxx15xx12=180cm^2`
Rise in water level = `"Volume of cube"/"Area of base of rectangular vessel"`
`(729)/180=4.05cm`
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