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10 July, 07:55

The circumference of a circle is 5.7mm what is the area of the circle to 1 d. p.

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  1. 10 July, 08:04
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    So the area of a circle is pi x the radius squared.

    To find the radius we need to half the diameter so 2.85mm

    Next we need to square this so 2.85 x 2.85 = 8.1225mm

    The area = pi x 8.1225

    = 25.51758633mmsquared

    = 25.5 mmsquared
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