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en.wikipedia.org/wiki/Circumference

The

www.math-prof.com/Geom/Geom_Ch_31.asp

It is called the

answers.yahoo.com/question/?qid=20070407193137AAYu4mJ

illuminations.nctm.org/lesson.aspx?id=1849

Students measure the

www.neoprogrammics.com/spheres/circumference_area_volume.php

www.pbslearningmedia.org/resource/ng09.math.geometry.pla.diameter/relationship-between-diameter-and-circumference/

Using two circles nearby, they compare the

www.cpalms.org/Public/PreviewResourceLesson/Preview/30369

Relationship of

www.math-only-math.com/relation-between-diameter-radius-and-circumference.html

www.ask.com/youtube?q=Relationship between Diameter Circumference&v=KDP8iVMDH8Q

Jun 7, 2015 ... This screencast shows how we can find the relationship between diameter and
circumference !

www.ask.com/youtube?q=Relationship between Diameter Circumference&v=KH6lHPrYwxI

Jun 7, 2015 ... Discovering the relation between circumference and diameter .

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www.emathzone.com

This constant ratio is denoted by Greek letter π . The value of π is 22/7or 3.1415.
∴

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www.mathgoodies.com

Pi is the ratio of the