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Distinguish surface and volume - Paper 2

Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.

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Sphere of diameter 14 cm. Radius is half the diameter. Surface area = 4*pi*r^2; volume = 4*pi*r^3/3. A CLOSED hemisphere includes both half the curved sphere surface and one flat circular base. Give exact answers in terms of pi, not rounded decimals.

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