A cylindrical can, whose base is horizon...

A cylindrical can, whose base is horizontal and of radius 3-5 cm, contains sufficient water so that when a sphere is placed in the can, the water just covers the sphere. Given that the sphere just fits into the can, calculate :
the total surface area of the can in contact with water when the sphere is in it,

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The correct Answer is:

`192.5 cm ^(2)`

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