Find the area of a circle having a radius of 9 cm

Question

Find the area of a circle having a radius of 9 cm

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Diễm Thu 4 years 2021-07-17T11:12:57+00:00 2 Answers 3 views 0

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    0
    2021-07-17T11:14:44+00:00

    Answer:

    81 pi cm^2

    or approximately 254.34 cm^2

    Step-by-step explanation:

    The area of a circle is given by

    A = pi r^2

    A = pi (9)^2

    A = 81 pi

    Using 3.14 as an approximation for pi

    A = 81 (3.14)

    A =254.34 cm^2

    0
    2021-07-17T11:14:47+00:00

    Answer:

    81pi cm^2

    Step-by-step explanation:

    formula : pi*r^2

    pi*9^2

    pi*81

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