pi=3.15 and i have the proof ???!!!! look at the details?

Question

if we have The circumference =15.75 and the diameter is 5 so the PI=3.15 ( accuracy number ) this is the pi that the unite that god put it in the universe and this is the discovery of the author
( mohamed teleb )

Answer 1

Wow, there are super computers out there that have yet to solve the equation, but you solved it with your puny little brain. You are a genius. Unfortunatly for you, its not a circle you have the there, or you would have solved that problem, and got millions of dollars and the Pulitzer Prize.

Answer 2

1. There is a description in the Bible of a circumference of 30 and a diameter of 10. This has led some US officials to try and impose a math system based on pi = 3 (exactly).

2. If you do away with the plane, you can make pi anything you want and still have a consistent math system. For example, a circle traced out on Earth's surface, with a radius of 1800 nautical miles (2083 US miles or 3,333 km) will have a circumference of 10,800.

Circ. / Diam = pi
10,800 / (2*1800) =
10,800 / 3600 = 3

Imagine the Earth as a perfect sphere (just to make the math easier, the idea still works with the real shape but calculations are longer).

The centre of the circle is at the North pole.
Let us make the radius equal to 10,000 km (one quarter of the circumference). Then our circle will be the equator. The circumference of our circle is the length of the equator: 40,000 km. Our diameter is twice the radius = 20,000 km

pi = 40,000 / 20,000 = 2

Even more fun:

Still at the North pole, we make the radius equal to 20,000 km. Where is the circle? Well, from the North pole, if you go exactly 20,000 km in any direction, you get to the South pole. Therefore our entire circle is a single point: Circumference = 0.

pi = 0 / 40,000 = 0

A sphere has "positive" curvature. We can imagine surfaces with "negative" curvature, although we have no very large examples. On such surfaces, we can make pi larger than 3.14159265...

So, the moral of the story is that if we do away with some basic requirements of plane trigonometry, then we can make pi any value that we want. For example, you can build an enclosed curved figure with a perimeter of 15.75 and a mean "radius" of 2.5 to get a "pi" of 3.15. However, that figure will not be a perfect circle (or the values are just rounded numbers).

3. It is also possible to construct closed figures with the distance measured with a different "metric" than the one we commonly use.

On a graphed plane, we normally use distance^2 = x^2 + y^2

However, it is possible to use other metrics. It is possible to build consistent geometric systems with any metric of this model:

D^n = x^n + y^n

(if n=2, we get the one we are familiar with).

n=1 is the "taxicab" metric: If a taxicab has to go 4 streets to the north and 7 avenues to the west, it will have to cover a distance of 4+7=11 city blocks. It cannot drive through buildings.

In that system, a "circle" looks exactly like a diamond (a square on point).

You can use any number for n (including fractions if you really want to complicate your life). You can even allow n to grow to infinity (and use the limit). At the limit, a "circle" looks like a cross (can't get more religious) and pi can be made any value you want.

By choosing the appropriate n, you can make your "circle" into different shapes and get a circumference of 15.75 for a diameter of 5 (if that is what you really want).

However, it appears that the universe God gave us uses the metric: D^2 = x^2 + y^2. In such a system, if you place a point at exactly one distance unit from a centre and if you allow this point to cover all positions where the distance remains at one unit, the total distance covered by the point, until it returns to its starting point, is 6.2831853....
6.2831853... / 2 = 3.14159265... as expected.

Answer 3

It's not a perfect circle, you idiot. You can't just make up numbers for the circumference and for diameter and arbitrarily deduce some value of pi. And what the hell is an "accuracy number?"

Answer 4

You are wrong. Try making a circle with those exact measurements.

Answer 5

Mmm...... really confusing!!!!