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19 March, 13:44

Find the area of a circle with a diameter of 4. Either enter an exact answer in terms of use 3.14 3enter your answer as a decimal.

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  1. 19 March, 14:08
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    4pi

    Step-by-step explanation:

    The area of a circle is given by

    A = pi r^2

    where r is the radius

    The radius of a circle is found by

    r = d/2 where d is the diameter

    r = 4/2 = 2

    So A = pi (2) ^2

    pi (4)

    4pi
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