brebrebrown6269 brebrebrown6269
  • 24-11-2017
  • Mathematics
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Find the circumference of a circle with diameter 9mm

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ankastre
ankastre ankastre
  • 24-11-2017
C = 2pi *r
r= d/2

C= 2pi *4.5

C= 2*3.1412*4.5

C= 28.27
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