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math

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find area of cirle 3.9cm radius to nearest tenth?

a=pie 3.14 x r squared
3.14 x 3.9(15.21)
3.14 x15.21 =47.75
nearest tenth =47.8cm squared
is this the correct answer?

  • math - ,

    Yes, you are right!

  • math - ,

    need help with math

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