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Mathematics 12 Online
OpenStudy (here_to_help15):

Help please thanks :)

OpenStudy (here_to_help15):

OpenStudy (here_to_help15):

@zepdrix

OpenStudy (here_to_help15):

@wio @Zarkon

OpenStudy (ehsan18):

the formula here is ??

OpenStudy (here_to_help15):

I dont know

OpenStudy (here_to_help15):

@Data_LG2

OpenStudy (ehsan18):

n/360 pi(r)^2

OpenStudy (ehsan18):

the answer is A.

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