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The difference between outer and inner curved surface areas of a hollow right circular cylinder 14 cm long is 88cm2 .If the volume of metal used in making cylinder is 176 cm3 find the outer and inner diameters of the cylinder____?

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Given height of a hollow cylinder = 14 cm 

Let internal and external radii of hollow 

Cylinder be ‘r’ and R 

Given that difference between inner and outer 

Curved surface = 88 cm2 

Curved surface area of cylinder (hollow)

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