if a aluminum can has a radius of 10cm and a height of 20 cm. how many square cm of aluminum does it take to make such a can.
A = 2 π r2 + 2 π r h
A = (2 * 3.14 * 100) + (2 * 3.14 * 20)
A = 628 + 125.6
A = _______ cu cm
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