anonymous
  • anonymous
Probability.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
amistre64
  • amistre64
area inner 1 - -------- = chances area outer
amistre64
  • amistre64
4pi 1 - ---- = 1 - 1/4 = 3/4 = .75 = 75% ? 16pi

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amistre64
  • amistre64
nah... thats the cahnce of the outer lol
amistre64
  • amistre64
25% chance you hit the inner
anonymous
  • anonymous
(Area of a circle) = 2(pi)r^2 \[A' = 2\pi(4^{2}) = 32\pi\]\[A" = 2\pi(2^{2}) = 8\pi \] \[{32\pi \over 8\pi} = {100 \over x} \]\\[x = 25\]
amistre64
  • amistre64
area of a circle = pi r^2 :)
anonymous
  • anonymous
but what is the probability that it hits the inner?
anonymous
  • anonymous
the probabilit is 25%
amistre64
  • amistre64
25%; 1 in 4
anonymous
  • anonymous
ops, you're right amistre hehe but still works lol
amistre64
  • amistre64
lol :) got lucky ;)

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