Question

The radius of base of a solid cylinder is 7 cm and its height is 21
cm. It is melted and converted into small bullets. Each bullet is of same size. Each bullet consisted of two parts viz. a cylinder and a hemisphere on one of its base. The total height of bullet is 3.5 cm and radius of base is 2.1
cm. Approximately how many complete bullets can be obtained?

A 83
B 89
C 74
D 79
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