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The area of a rectangular label that completely covers the curved surface of the can without overlapping is nothing but the curved surface of the cylinder, i.e 2πrh = 2(π)(4)(12) = 96π. Option C
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Another way if you dont remember curved surface area formula:

The label is nothing but a rectangle when flattened with L= circumference of circle of r = 4cm and B= h= 12
circumference = 2 pi (4) = 8 pi
area = L*B = 8 pi * 12 = 96 pi
--C--
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Given,

The radius of the cylindrical can, r = 4cm

Height of the cylindrical can, h = 12cm

The area of a rectangular label that completely covers the curved surface of the can without overlapping will be equal to the curved surface area or lateral surface area of the cylinder : 2 * Pi * r * h = 2 * Pi * 4 * 12 = 96 Pi

The correct answer is C
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