To four decimal places, 3.1416 is better -- to five, 3.14159 (the 5 gets rounded up due to the 9 following).
You typed the letter tau twice: τ τ
Instead, type the letter pi once: π
Or type the letter pi and the letter iota: πι
(ττ = Τ Τ is not the same as π = Π, just as rn = R N is not the same as m = M, even if they look similar when close together.)
Thank you for your help. I can't wait to try this out! Also, I'm very impressed with the quantity of languages you have tried. What is your native language?
makes no sense. Says that the n, ni is correct, and i put just n. (Can't do pi symbol. It was multiple choice).