Questions for Extra Credit 1

1. How many terms of the Gregory-Leibniz formula is needed for the
estimate of π to be within 5 digits of accuary after the decimal point?
(I.e., when would your program report that pi is approxiamtely
3.14159...?) 






2. How many groups have to be included in the BBP formula in order to
get pi to 5 digits of accuracy? 




3.  What happens when the user asks for 100 groups of the BBP formula
to be included?