A conical vessel of radius 6 cm and height 8 cm is completely filled with water.A sphere is lowered into it and its size is such that when it touches the sides of the vessel ,it is just immersed in water.What fraction of water overflows ?
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Babylonians, somewhere between 2000 BC and 1500 BC! 'Zero' (0) was developed much later by them at around 700 BC.
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