Monday, May 19, 2008

Elearn Geometry Problem 76



See complete Problem 76
Area of a Circle, Square, Circular Sector, Lune. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

1 comment:

  1. Let the white region have an area W
    Then:

    pi/4 - (S1 + S2 + S3) = W -> (1)

    Which is also equal to Area of circle
    - Area of Blue region

    Area of Circle in center of square of side 1 = pi(0.5)^2 = pi/4

    Therefore W = pi/4 - S -> (2)

    ie. pi/4 -(S1 + S2 + S3) = pi/4 -S

    => S1 + S2 + S3 = S

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