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anonymous
 one year ago
Linda throws a dart that hits the square shown below:
A square is drawn. A circle of radius 9 units touches the sides of the square.
What is the probability that the dart hits a point in the circle?
18%
21.5%
78.5%
81%
anonymous
 one year ago
Linda throws a dart that hits the square shown below: A square is drawn. A circle of radius 9 units touches the sides of the square. What is the probability that the dart hits a point in the circle? 18% 21.5% 78.5% 81%

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@TheSmartOne Anyone?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1435684160450:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1You need to find the area of the square and the area of the circle.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0cOuld u help me with that i thought my answer was going to be 21.5%

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Since you know the dart hit the square, the total outcome is the area of the square. The desired outcome is the area of the circle. \(P(hitting~ the ~circle) = \dfrac{area~of~circle}{area~of~square} \)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The square has a half side of 9 units. What is the side of the square? What is x in the figure below? dw:1435684401233:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it would have to be 78

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The radius of the circle is 9. The side of the square is the same as the diameter of the circle. If a circle has a radius of 9, what is its diameter?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1\(P(hitting~ the ~circle) = \dfrac{area~of~circle}{area~of~square}\) \( = \dfrac{\pi r^2}{s^2}=\dfrac{\pi (9)^2}{18^2} = \dfrac{81 \pi}{324} \approx \dfrac{254.34}{324} = 0.785 = 78.5\%\)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1You are correct.
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