Area of part of circle

A circle with the center O has radius of 1 unit. There is also another circle with diameter AB.
Find the area of the shaded region.

3 thoughts on “Area of part of circle”

  1. quarter of circle ABO = 0.25*3.14*1*1 = 0.785
    triangle ABO = 0.5*1*1 = 0.5
    area of sector AB = 0.285
    semicircle with diameter AB= ((sqrt(2))/2) ^2 * 3.14 *0.5= 0.785
    so that shaded area = 0.785 – 0.285 = 0.5

    bener ga?

    1. Bener dong :p
      Yg kurang tepat kata2 “area of sector AB”, harusnya “area of segment AB”
      One commendation ticket to you tomorrow 😀

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