Why is the gravity formula like this?

Question

This is the gravity formula G=4TT^2L/T^2

TT=Pie(3.14)

L=lenghth of pendulum

T=period of pendulum swing

Can't the 4TT^2 be 39.4384 because Pi is always the same it doesn't make any sense why do they make you do that?

Answer 1

If you make it 39.4384, you will have to remember another constant!

Answer 2

Pie is not 3.14.  3.14 is an approximation to Pie.  So to be accurate, you use the symbol for Pie.

Answer 3

interesting question

I suppose it's because 39.4384 is meaningless to most people, while 4pi^2 shows how the formula was derived.