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dayday2013

https://pwnd9373-ndscholarship-ccl.gradpoint.com/Resource/630568,72F,0,0,0,0,0/Assets/testitemimages/geometry_b/area/mc129-1.jpg A point in the figure is selected at random. Find the probability that the point will be in the shaded region.

  • 9 months ago
  • 9 months ago

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  1. domu
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    Assume the square has side lengths = 1 so that the area of the square is 1, then the half circles have diameter = 1 (i.e. radius =1/2). Calculate the area of the circle and divide it by the area of the square.

    • 9 months ago
  2. dayday2013
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    but i dont know the area of the square @domu

    • 9 months ago
  3. domu
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    That's fine, all we need is the proportion of the circle compared to the square. So it doesn't matter which length you pick for the side of square. I.e. we can just assume the length of each side of the square = 1.

    • 9 months ago
  4. dayday2013
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    ok this problem is very hard for me

    • 9 months ago
  5. domu
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    What's the formula for the area of a circle?

    • 9 months ago
  6. chhanndresh
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    Probability will be pi/4

    • 9 months ago
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