Why the ratio of circumference of a circle to the diameter of circle is constant? Please explain!
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Because the ratio of circumference and diameter of a circle is always a constant pie =22/7
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BONJOUR DEAR!
"Euclid proved that this ratio (C/d) is always the same, no matter the size of the circle. What he did was inscribe similar regular polygons in any two circles. Then, he increased the number of sides of the inscribed regular polygons. He reasoned that as the number of sides increased, the perimeter
of the inscribed polygon gets closer and closer to the circumference of the circle. He also showed that the perimeters of the similar polygons were proportional to the radii of the circles in which they were inscribed. And so, C is proportional to r, in other words C/r is a constant. By convention, pi=C/2r. And we can use that as our definition of pi."
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