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16 January, 12:12

Find the circumference of a circle if the area is 45m^2

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  1. 16 January, 12:35
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    C=2pir

    A=pir^2

    45=pir^2

    divide both sides by pi (aprox pi=3.141592)

    14.32394785=r^2

    sqrt both sides

    3.784699176=r

    sub

    C=2pir

    C = (2) (pi) (3.784699176)

    aprox pi=3.141592

    C=23.779961311m
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