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Calculate the area between the two circles, as shown if the smaller radius is 3 and the larger radius is 11

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sqdancefan

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Answer:

  112π ≈ 351.9 square units

Step-by-step explanation:

Assuming the smaller circle is wholly contained within the larger circle, the difference of their areas is ...

  ΔA = (π·11²) -(π·3²) = π·(121 -9) = 112π ≈ 351.9 . . . square units

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The formula for the area of a circle is ...

  A = πr²

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