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Mathematics 20 Online
OpenStudy (anonymous):

Help me pretty please? FAN + MEDAL

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

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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