Circles

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Source: — Problem Solving |

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by vikram4689 » Sat Jun 25, 2011 5:04 am
Length of Arc ADC = Half of Circumference = pi*r = pi*sqrt(x)
r = sqrt(x)
Length of Diagonal of Sq. = 2*r= 2*sqrt(x)
Area of Sq. = 2x
Area of Circle = pi*x

Prob. = 1- 2x/pi*x = 1- 2/pi
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by MBA.Aspirant » Sat Jun 25, 2011 7:23 am
Arc ADC = TT rootx = 1/2 2TTr

r = rootx

area of circle = TTx

area of square = 1/2 (2rootx)^2 = 2x

probability it falls in the square area = 2x/TTx = 2/TT

probability not = 1- 2/TT