i need to calculate the effective area and diameters of compound elipses
2006-09-27 23:24:11 · 5 answers · asked by daniel g 7 in Science & Mathematics ➔ Mathematics
Try this.
http://www.csgnetwork.com/areaellipse.html
It's a cool ellipse calculator, but the inputs are major and minor axis distances. Logically, I can't see a way to calculate an area of an ellipse with just the circumference. You have tweaked my interest. I'll edit this later.
Okay, there is no accurate method for finding the area of an ellipse based on the perimeter or circumference alone. There is a simple formula using the major and minor radii....Pi*r1*r2.
Also consider that an ellipse is a "squashed" circle so you may be able to determine the average radius by dividing the circumference by 2pi, then you would have to divide half of one measured axis by that to get the other "radius".
2006-09-28 00:53:49 · answer #1 · answered by Anonymous · 1⤊ 0⤋
If you have the equations used to derive the ellipses, then you can plot them on a cartesian coordinate graph and then use integrals to find the area for the top half and the lower half.
2006-09-28 06:29:45 · answer #2 · answered by L96vette 5 · 0⤊ 0⤋
If you want the area of an ellipse(an oval shape).The area is pie*(shortest radius)*(longest radius).
Otwerwise integration is always there.
2006-09-28 08:37:50 · answer #3 · answered by Divyam Singhal 1 · 0⤊ 1⤋
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2006-09-28 06:26:31 · answer #4 · answered by niranjaninamdar 2 · 0⤊ 2⤋
use this:
http://mathworld.wolfram.com/SemilatusRectum.html
2006-09-28 07:12:32 · answer #5 · answered by ioana v 3 · 0⤊ 0⤋