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प्रश्न
A sphere cut out from a side of 7 cm cubes. Find the volume of this sphere?
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उत्तर
∵ Diameter of sphere equal to sides of cube.
∴ Radius of sphere = `7/2` cm
Volume of sphere = `4/3` πr3
Volume of sphere = `4/3 xx 22/7 xx 7/2 xx 7/2 xx 7/2`
Volume of sphere = `539/3 = 179.66` cm3.
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