Circumference Definition and 111 Threads

Circumference-Diameter Ration of a circle. x=ox ciram. x diam. ciram. x rad. Determine at least two differenct methods of making the measurements. Be sure you include ways to measure the circumference of the cylinder in each method. Keep in mind that you must measure eah quantity...

pre-cal proofs i need help with doing proofs. Question- prove that the graph of the equation x² + y² - 2x + 4y=0, is a circumference. find find the center of it and the radius.

An ellipse has an equation which can be written parametrically as: x = a cos(t) y = b sin(t) It can be proved that the circumference of this ellipse is given by the integral: \int^{2\pi}_0 \sqrt{a^2 \sin^2 t + b^2 \cos^2 t} \ \ dt Prove that, if a=r(1+c) and b=r(1-c), where c is a...

Hi everybody, My question is: how do we prove that the ratio of a circle's circumference to its diameter is a certain real number, the same for any circle (which we call pi)? If the proof is difficult to post, could you suggest some books that may include it because i haven't found one yet...

I can remember reading somewhere that the ping command can be used to measure the circumference of the Earth or something similar. Does anyone know how to do this, or have a link to the article? --thanks

Okay, I understand that the r-coordinate in the Schwarzschild metric represents the reduce circumference. My problem is that the r-coordinate in the Kerr metric is NOT the reduced circumference! What is it? Somebody, please answer this as quickly and as painlessly as possible! Thank You

Find magnetic field at point on Circumference/Ampere-Maxwell Eq. A uniform electric field points in the z direction with a value given by EZ(t) = a+bt, with a = 18 V/m and b = 2 V/(m s). The electric field is confined to a circular region in the xy plane with radius R = 4 meters. What is the...

Hey guys I'm currently making a small game (simple space game) and have a problem with numerically determine area and circumference of a ball that is being thrown. The problem is presented here: http://trasigkondensator.tripod.com/ball.htm Thanks in advance

Imagine a circle of given radius. Construct all circles of equivalent radii whose centers constitute that initial circumference. Can you derive a probability density that describes the overall distribution of points from those resultant circles?

is there a formula to find the circumference of an ellipse?

I have two integrals to give the circumference of an ellipse. I can't solve either. First, using rectangular coordinates, 1/2s=S{[1+(f'(x))^2]^(1/2)}dx taken from x=-a to x=a Since, y^2=b/a(a^2-x^2) 2y*y'=-2bx/a y'=-bx/(ay) [f'(x)]^2=(x^2)/(a^2-x^2) At this point, I'm already...