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dayday2013

  • one year ago

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.

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  1. domu
    • one year ago
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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.

  2. dayday2013
    • one year ago
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    but i dont know the area of the square @domu

  3. domu
    • one year ago
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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.

  4. dayday2013
    • one year ago
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    ok this problem is very hard for me

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

  6. chhanndresh
    • one year ago
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    Probability will be pi/4

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