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6 February, 08:37

The circumference of a circle is 25.12cm. What is the area of the circle? Use 3.14

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  1. 6 February, 09:03
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    C=2pir

    area=pir^2

    given

    c=25.12

    25.12=2pir

    pi=3.14

    25.12=2 (3.14) r

    25.12=6.28r

    divide both sides by 6.25

    4=r

    sub into other

    area=pir^2

    area=pi4^2

    area=16pi

    area=16 (3.14)

    area=50.24

    the area is 50.24 square cm
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