A cylindrical jug whose radius is 21 cm and height is 32 cm is full of coffee and this has to be poured into some cups. The shape of the cups is a frustum of the cone having end radii 5 cm and 3 cm and the cup is 12 cm high. Find the number of cups that can be filled, if 50% cups are filled upto their 50% capacity only and rest 50% are filled completely?
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