A hollow cylinder is made up of metal. The difference betwee

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SSC CGL Tier-2 9-March-2018 Maths-shift-1
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A hollow cylinder is made up of metal. The difference between outer and inner curved surface area of this cylinder is 352 cm². Height of the cylinder is 28 cm. If the total surface area of this hollow cylinder is 2640 cm², then what are the inner and outer radius (in cm)?

[SSC CGL Tier-2 9-March-2018 Maths-shift-1]

A 4,6

B 10,12

C 8,10

D 6,8