Plz help will medal
Abel throws a dart that hits the square shown below:
What is the probability that the dart does not hit a point in the circle?
16%
21.5%
64%
78.5%
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OpenStudy (anonymous):
OpenStudy (anonymous):
@jigglypuff314
@dan815
jigglypuff314 (jigglypuff314):
first find the area of the circle, can you do that? :)
OpenStudy (anonymous):
yes
jigglypuff314 (jigglypuff314):
tell me what you get :)
[radius = 4]
then find the area of the square
[side = 4+4 = 8]
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OpenStudy (anonymous):
the area for the circle is 50.24
OpenStudy (anonymous):
and the area for the square is 16
OpenStudy (anonymous):
right?
OpenStudy (anonymous):
@jigglypuff314
jigglypuff314 (jigglypuff314):
I got a little sidetracked, sorry ^_^"
the circle is correct! :)
try the square again, side = 8
area of square = (side)*(side)
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OpenStudy (anonymous):
oh ok
OpenStudy (anonymous):
it's 64
jigglypuff314 (jigglypuff314):
yes :)
now divide (area of circle) by (area of square) = the probability you want
OpenStudy (anonymous):
it's 0.785
jigglypuff314 (jigglypuff314):
multiply by 100 to make it a percent ^_^
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OpenStudy (anonymous):
78.5%
jigglypuff314 (jigglypuff314):
tah dahhhh :)
OpenStudy (anonymous):
yay! thanks! But i was wondering if you could help with just 2 more ^^' sorry but you don't have to if you don't want to
jigglypuff314 (jigglypuff314):
sure :) open up another question thread and tag me, I'll see if I can help ^_^