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

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Given height of a hollow cylinder = 14cm

Let internal and external radii of hollow

Cylinder be ‘r’ and R

Given that difference between inner and outer

Curved surface = 88cm2

Curved surface area of cylinder (hollow)

Therefore, Internal radii of hollow cylinder = 1.5cm

External radii of hollow cylinder = 2.5cm

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