1. Quote of the week: "People say nothing is impossible; but I do nothing every day!" - Anonymous
2. New quiz: AQQ258 about a partial eclipse Sun-Moon
Some of us (in Dallas) had probably the chance to have observed a total eclipse of the Sun last week.
To celebrate that event in our quizzes, we propose the following related challenge:
The above pictures describe a partial eclipse between the moon (circle B) and the sun (circle R).
At a certain instant, the eclipse is such that points MNO form a quarter area of circle R; meaning arc MN is a quarter circle).
At that moment, point O is the center of R and the segment OM measures 4 cm.
Question:
What is the area of the portion of blue circle B that is situated outside circle R?
Good luck! And try to be among the firsts!
Kuo-Chang
P.S. Don't hesitate to share those weekly quizzes in EZ to colleagues or friends!
