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12-03-2020
Mathematics

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a certain coin is a circle with a diameter of 18mm what is the exact area of either face of a coin in terms of Pi

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et781401 et781401

12-03-2020

Answer:

81 pi

Step-by-step explanation:

formula for area of a circle-pi times radius squared

18/2=9

9 squared 81

answer-81 pi

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