It was erroneously stated thusly :"How can you start with the diagonal? You can only calculate the diagonal from the base length. You cannot calculate the base length from the diagonal. Besides, the base lengths vary due to builder's error."

Any number can be assumed to be representing a diagonal of a square and when divided by the square root of 2 would give the corresponding side. So the statement above is TOTALLY WRONG !!! ( As usual) . For 622 we get 439.820

But as I have pointed out numerous items ...

Square root of 3 divided by 3 x 10,000 = 5773.5027 and times 1/2 Pi = 9068.9968211711 and divided 20.62 = 439.8155 and agreeing to a degree of accuracy of 0.9999899 and diagonal of 621.993

Same old, same old. Ever get the feeling we are caught in a devised loop ?

"There is nothing as impenetrable as a closed mind"
and ..." if everything is a coincidence what is the point of studying or measuring or analyzing anything ?" db