Richii Richii
  • 18-05-2016
  • Mathematics
contestada

find the circumference of a circle if the area is 45m^2

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apologiabiology
apologiabiology apologiabiology
  • 18-05-2016
C=2pir
A=pir^2
45=pir^2
divide both sides by pi (aprox pi=3.141592)
14.32394785=r^2
sqrt both sides
3.784699176=r
sub
C=2pir
C=(2)(pi)(3.784699176)
aprox pi=3.141592
C=23.779961311m
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