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Bikuser asked Sep 23, 2022

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42 votes

Bikuser asked Sep 23, 2022

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20 votes

Answer:

50.27

452.39

0.79

Explanation:

A=πr2=π·42≈50.26548

A=πr2=π·122≈452.38934

A=πr2=π·0.52≈0.7854

2.8k points

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