I was wondering if it is possible to consider any real circle (say, that of a plate or a disk) to be measured in multiples of pi, since pi has infinite numbers after the decimal. Of course everything must have an exact length regardless of how many numbers after the decimal there may be, is it not so?
2006-09-28 14:11:15 · 2 answers · asked by Lio C 2 in Science & Mathematics ➔ Physics
It is so - everything must have an exact length.
To get an exact number, however, we must use units that can be laid out on the length and measured to a nice number - like 4 or 4 1/2 units long.
When we use Pi, we do not have that luxury - because Pi is a ratio of the circumference to the radius of a circle - and it is indeed a number with infinite non-repeating digits after the point.
2006-09-28 14:59:52 · answer #1 · answered by LeAnne 7 · 0⤊ 0⤋
its very applicable in real life, using sin, cos, tan after doing figurings with pi, you will usually get a round number for you measurements, if you need to.
2006-09-28 21:14:28 · answer #2 · answered by soggy_dough_nut 2 · 0⤊ 0⤋