The diameter of a spherical balloon increases from 14 cm. to 28 cm. as air is being pumped
into it. Find the ratio of surface areas of the balloons in the two cases.
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Step-by-step explanation:
ans is 1:4
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Answer:
1 ratio 4 4pi7*7 ratio 4 pi 14*14 =49 ratio 196 =1ratio 4
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