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08-04-2021
Mathematics

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KidLink1 KidLink1

08-04-2021

Answer:

50.27

452.39

0.79

Step-by-step explanation:

A=πr2=π·42≈50.26548

A=πr2=π·122≈452.38934

A=πr2=π·0.52≈0.7854

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