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Mathematics 14 Online
OpenStudy (anonymous):

Calculate the entire area of the dartboard ??

OpenStudy (austinl):

Ok, so we are assuming that the dartboard is a perfect circle. \[A=\pi r^2\]

OpenStudy (anonymous):

Ok

OpenStudy (austinl):

The probability stuff is a little out of my wheelhouse though. Sorry.

OpenStudy (anonymous):

Ok, thanks for trying :)

OpenStudy (sonyalee77):

A = pi * r^2 A of dartboard = pi * 9^2 = 81pi A of dartboard less green ring = pi * 7^2 = 49pi A of green ring = 81pi - 49pi = 32pi P(hitting green ring) = 32pi / 81 pi = 32/81 = .39506 = 39.506%

OpenStudy (anonymous):

ok, o i got it thanks :D

OpenStudy (sonyalee77):

ur welcome :)

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