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A balloon’s radius increases 3 times when the air is pumped in it. If the surface area of the balloon after pumping the air is A2 and its surface area before pumping the air is A1, then what is the value of \(\frac{A_1}{A_2}\) ?

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Surface area of the sphere = 4 π r2 , where “r” is the sphere's radius.

There are three types of surface area in solids: lateral surface area (LSA), curved surface area (CSA), and total surface area (TSA).


A balloon’s radius increases 3 times when the air is pumped in it. If the surface area of the balloon after pumping the air is A<sub>2</sub> and its surface area before pumping the air is A<sub>1</sub>, then what is the value of \(\frac{A_1}{A_2}\) ?






 
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