> it's 3.14, not 3.16

Oops: an incomplete remembering of what's usually known as the Indiana Pi Bill, which (on the way to attempting to square the circle) tries to set "pi = 10/4" by legislative fiat. Read the above Wikipedia entry for a surprisingly reasonable exposition and demolition of the unreasonable .... something I should have checked first for myself. I AM EMBARRASSMENT, as Death would have intoned.