The Naked Scientists
Toggle navigation
Login
Register
Podcasts
The Naked Scientists
eLife
Naked Genetics
Naked Astronomy
In short
Naked Neuroscience
Ask! The Naked Scientists
Question of the Week
Archive
Video
SUBSCRIBE to our Podcasts
Articles
Science News
Features
Interviews
Answers to Science Questions
Get Naked
Do an Experiment
Science Forum
Ask a Question
About
Meet the team
Our Sponsors
Contact us
User menu
Login
Register
Search
Home
Help
Search
Tags
Recent Topics
Lonely Topics
Login
Register
Naked Science Forum
General Science
General Science
Calculating the surface area of an ellipse?
« previous
next »
Print
Pages: [
1
]
Go Down
Calculating the surface area of an ellipse?
4 Replies
5715 Views
0 Members and 1 Guest are viewing this topic.
Donnah
Ma-Donnah
Naked Science Forum King!
1763
Activity:
2.5%
Thanked: 1 times
Calculating the surface area of an ellipse?
«
on:
06/05/2004 15:28:24 »
Hey everyone!
Donnah's son again [
]
New question, although a bit more mathmatical in nature.
In my calculus class, we have been debating a bit about how to find the surface area of an ellipse.
I have a pretty good theory as to how to get the perimeter, but still the SA eludes me. Anyone Know?
Thanks
-Steve
«
Last Edit: 30/06/2004 09:07:20 by Exodus
»
Logged
"If we could change ourselves, the tendencies in the world would also change. As a man changes his own nature, so does the attitude of the world change towards him. ... We need not wait to see what others do." Mahatma Gandhi
Dan B
Jr. Member
49
Activity:
0%
Re: Calculating the surface area of an ellipse?
«
Reply #1 on:
06/05/2004 16:34:16 »
Integrate your circumference from 0 to 2pi.
Logged
Ylide
Moderator
Hero Member
905
Activity:
0%
Re: Calculating the surface area of an ellipse?
«
Reply #2 on:
07/05/2004 18:38:34 »
Or, if line integral aren't your thing, you can do it with a basic cartesian equation of the ellipse.
Center the ellipse on the origin and write it as an equation, X^2/a^2 + Y^2/b^2 = 1. (where a is the X-axis radius and b is the y-axis radius) Solve for Y = f(x) and you have the equation for one half of the ellipse. Integrate the equation f(x) over the length in the x-axis and you have the area under the top half of the ellipse. Now double it, and there's your answer.
This message brought to you by The Council of People Who Are Sick of Seeing More People
Logged
This message brought to you by The Council of People Who Are Sick of Seeing More People
chris
Naked Science Forum King!
5977
Activity:
90.5%
Thanked: 93 times
The Naked Scientist
Re: Calculating the surface area of an ellipse?
«
Reply #3 on:
14/05/2004 04:46:05 »
Wow, nicely done !
Chris
"I never forget a face, but in your case I'll make an exception"
- Groucho Marx
Logged
I never forget a face, but in your case I'll make an exception - Groucho Marx
Ylide
Moderator
Hero Member
905
Activity:
0%
Re: Calculating the surface area of an ellipse?
«
Reply #4 on:
30/06/2004 14:30:07 »
A year and a half of calculus had to be good for something.
This message brought to you by The Council of People Who Are Sick of Seeing More People
Logged
This message brought to you by The Council of People Who Are Sick of Seeing More People
Naked Science Forum
Re: Calculating the surface area of an ellipse?
«
Reply #4 on:
30/06/2004 14:30:07 »
Print
Pages: [
1
]
Go Up
« previous
next »
Tags:
There was an error while thanking
Thanking...