Did you know the great pyramid is perfect, but they say the top of the pyramid is not in the middle of the square base and has an error of a quarter of a inch lol . but that is because the modern scientists has calculate wrong the Pi number. 
Pi or π is a mathematical constant whose value is the ratio of any circle's circumference to its diameter in Euclidean space; this is the same value as the ratio of a circle's area to the square of its radius. It is approximately equal to 3.14159 in the usual decimal notation (see the table for its representation in some other bases). π is one of the most important mathematical and physical constants: many formulae from mathematics, science, and engineering involve π.
 Circumference = π × diameter

 Area of the circle = π × area of the shaded square

Calculating Pi number 
π can be empirically estimated by drawing a large circle, then measuring its diameter and circumference and dividing the circumference by the diameter. Another geometry-based approach, due to Archimedes,[19] is to calculate the perimeter, Pn , of a regular polygon with n sides circumscribed around a circle with diameter d. Then 

That is, the more sides the polygon has, the closer the approximation approaches π. Archimedes determined the accuracy of this approach by comparing the perimeter of the circumscribed polygon with the perimeter of a regular polygon with the same number of sides inscribed inside the circle. Using a polygon with 96 sides, he computed the fractional range: 


I will say only that his ARCHIMEDES axiom (287-212 BC) resulting from the conclusion that seems logical in our OLD thinking and reference, namely that a circle can be compared and even overlapped with circumscribed polygon with infinite number of sides is not accurate! 


The modern scientist will say to you if you give them the TRUE PI NUMBER "Archimedes established margin that included PI: between 3.1408 (223/71) and 3.1428 (22 / 7), so the your result are not included in this interval, so that is false!"

For the moment all the guys out there uses PI=3.1415(....)
but the true Pi number is 3,1446(...) go and measure on terrain!!! practical !!! 

PI=4/radical(PHI, the golden ratio = 1.61803399(...)) = 3.14460550981492(...) !!! 
 The Golden Ratio!!! 

Facts:
According to the true pi number the diameter of the Large Hadron Collider is smaller with 8.13 meters!
According to the true pi number the GREAT PYRAMID IS P.E.R.F.E.C.T.!!!!!!!
According to the true pi number N.A.S.A. is using the true PI number. lol
According to the true pi number the humans will be able to build more perfect buildings (and durable ffs!!!)
ACCORDING TO THE TRUE PI NUMBER THE MARKO RODIN SINGLE TORUS COIL WILL BE UPGRADED AND MORE EFFICIENT!!! and a little bigger in diameter )