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OpenStudy (anonymous):
Help me pretty please? FAN + MEDAL
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OpenStudy (anonymous):
OpenStudy (anonymous):
please help. tell me if i got them right
hartnn (hartnn):
you used the formula as pi *r^2 thats incorrect actually its \(A = 4 \pi r^2 \) so try both again :)
hartnn (hartnn):
or just multiply your answers by 4 to get correct answer! :P
OpenStudy (anonymous):
c and b? @hartnn
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hartnn (hartnn):
correct!: )
OpenStudy (anonymous):
Thank you!
hartnn (hartnn):
welcome ^_^
OpenStudy (anonymous):
can you help me with three more please?
hartnn (hartnn):
i can try..
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