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

User Zuboje
by
8.2k points

1 Answer

5 votes
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
User Nautica
by
7.4k points
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