26-01-2017
Mathematics

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it is 70cm long and has a circumference of 40cm what is the radius

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26-01-2017

the legnth is irrelivant

we know that
Circumference=2 times pi time radius

c=40
40=2 times pi times radius
divide both sides by 2
20=pi times radius
divide both sides b pi
20/pi=radius

the radius is 20/pi cm or aproximately 6.366199048 cm

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