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[" The radius of a sphere is changing at...

[" The radius of a sphere is changing at the rate of "0.1cm/sec],[" The rate of change of its surface area when the radius "],[" is "200cm" is "],[[" a) "8 pi cm^(2)/sec," b) "12 pi cm^(2)/sec," g) "160 pi," d) "200 pi" chilsec "]]

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