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. Rachel, an engineering student, was asked to make a model shaped like a cylinder withtwo cones attached at its two ends by using a thin aluminium sheet. The diameter of themodel is 3 cm and its length is 12 cm. If each cone has a height of 2 cm, find the volumeof air contained in the model that Rachel made. (Assume the outer and inner.dimensionsof the model to be nearly the same.)

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