Read More
Date: 6-5-2020
753
Date: 24-11-2020
550
Date: 10-2-2020
730
|
The approximation for pi given by
(1) |
|||
(2) |
|||
(3) |
In the above figure, let , and construct the circle centered at of radius 1. This intersects at point . Now construct the circle about with radius 1. The circles and intersect in , and the line intersects the perpendicular to through in the point . Now construct the point to be a distance 3 along . The line segment is then of length
(4) |
This construction was given by the Polish Jesuit priest Kochansky (Steinhaus 1999).
REFERENCES:
Bold, B. Famous Problems of Geometry and How to Solve Them. New York: Dover, p. 44, 1982.
Kochansky, A. A. "Observationes Cyclometricae ad facilitandam Praxin accomodatae." Acta Eruditorum 4, 394-398, 1685.
Steinhaus, H. Mathematical Snapshots, 3rd ed. New York: Dover, p. 143, 1999.
|
|
كيف تساهم الأطعمة فائقة المعالجة في تفاقم مرض يصيب الأمعاء؟
|
|
|
|
|
مشروع ضخم لإنتاج الهيدروجين الأخضر يواجه تأخيرًا جديدًا
|
|
|
|
|
المجمع العلمي يختتم دورته القرآنية في فن الصوت والنغم بالطريقة المصرية
|
|
|