Help Anyone Please ? Anyone

Help anyone please ? anyone

  Circle-radius forn is
(x - h {)}^{2} + (y - k {)}^{2} = {r}^{2} \\ where (h \: k)is \: the \: center \\ and \: r = radius
(0.5 , 3.5) --center

r^2=16
r =√16
r = 4

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