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A solid piece of iron is in the form of a cuboid of

dimensions (49cm × 33cm × 24cm) is melted and
moulded to form a solid sphere. The radius of the
sphere is:


As per the question volume of cuboid=volume of sphere
volume of cuboid=lbh cubic cm
volume of sphere =4/3pi r cube
4/3 pi r cube=38808cubic cm
             r cube =38808x21/4x22
                   r=21 cm
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