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Area of circle / Area of square = Pi ÷ 4

One day I was thinking why when you find the circumference of a circle is multiplied by the diameter in 3.14, I divided the area of the circle by the area of the square the same dimater was the result 0.785 and hit it in the area of the square was giving the area of the circle (D^2 * 0.785) I expected that another law in the calculation of the area of the circle and after a period went to a teacher in mathematics and offered After a short period of time, he said that this percentage can be found through compensation in the same law of area circle As indicated below, I just told him to try .

Explained

Area of circle = r^2 * Pi
= (D/2)^2 * Pi
= (D^2 / 4) *Pi
=(D^2) * 0.785

© by Qutaba qais mahmood

Information about the circle