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Subject :IMO    Class : Class 8

The thickness of a hollow metallic cylinder is 2 cm. It is 70 cm long with outer radius of 14 cm. Find the volume of the metal used in making the cylinder, assuming that it is open at both the ends. Also find its weight if the metal weighs 8 g per cm3.

A10440 cm3, 91250 g
B13440 cm3, 90000 g
C11440 cm3, 91520 g
DNone of these

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