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How to find the area of the circle ?

how to find the circumfence ?
circumference = 2πr , where r is the radius
area of a circle is ╥(r^2) and circumference is 2╥r (r means radius of the circle)...
area of circle=π x r x r
area of circle is (pi r^2) , and circumference is (2*pi*r) where pi=22.7 r=radius
area=pi r^2, circumference=2 pi r



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For area use the formula pi *radius square
for circumference use the formula 2 pi radius
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The formula to find the area of circle is ^Rsquare
and the formula to find the circumference of circle is 2^R
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