Pi was known before 1706 but William Jones used the Greek letter for pi in 1706. Euler popularized the use.
the same as pi squared, which is 9.86960440109
It means pi to the power of two. pi square = pi * pi
it originated in the USA
The square root of pi times pi is simply pi. Because pi*pi=pi squared, the squared and the square root will cancel each other, leaving just pi.
Pi to the 5th power is approximately 306.019684785
negative pi (-pi) = -3.14
[pi^(1/3)]^2 * pi = pi^(2/3) * pi = pi^(5/3) The answer is the cubic root of pi to the fifth power.
(pi + pi + pi) = 3 pi = roughly 9.4248 (rounded) Well, if you use the common shortened version of pi which is 3.14 and add that 3 times, you get 9.42.