Mathematics OpenStudy (waheguru):

what do we get if we divide a circles area by its circumfrence OpenStudy (waheguru):

cuz i dont understand this question |dw:1314318723421:dw| OpenStudy (anonymous):

$area=\pi r^2$ $circumference=2 \pi r$ $\frac{area}{circumference}=\frac{\pi*r*r}{2*\pi*r}$ $=r/2$ OpenStudy (anonymous):

Here's the formula for area: $A=\pi r^2$ Here's the formula for the circumference: $C=2\pi r$ Now just divide them: $(\pi r^2)/(2\pi r) = (r^2)/(2r) = r/2$ OpenStudy (waheguru):

so i divide 20 by ? OpenStudy (anonymous):

nope r/2=area/circumference r/2=20 r=2*20 r=40 OpenStudy (waheguru):

thx bro i got it yea

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