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how do you work out area of circle

asked in maths

siasl74 answers:

The area of a circle is pi (3.141etc...) multiplied by the square of the radius

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sdgasdgadfh answers:

make sure you use bodmas, square the radius before you multiply it by pie

Supplement from 01/07/2009 04:21pm:

π = pie and
r = radius, this is half the diameter

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Messerwisser answers:

Sometimes illustrated this way

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