- #1
antipreplaydee
- 3
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Someone please help. I need the formula to find the perimeter of an oval.
Can some one help me.
Can some one help me.
EMERGENCY-formula`s for perimeters of ovals
- Context: High School
- Thread starter antipreplaydee
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Discussion Overview
The discussion revolves around finding a formula for the perimeter of an oval, with participants exploring different interpretations of what constitutes an "oval" and the mathematical implications of those definitions. The scope includes conceptual clarification and technical reasoning related to geometry.
Discussion Character
- Exploratory
- Technical explanation
- Conceptual clarification
- Debate/contested
Main Points Raised
- Some participants request a formula for the perimeter of an oval, expressing urgency and confusion.
- One participant proposes an approximate formula for the perimeter of an oval, suggesting the use of an elliptic integral for an exact solution.
- Another participant questions the definition of "oval," suggesting it may refer to a quadratic shape, indicating a need for clarity.
- A participant identifies "ellipse" as a specific type of oval, providing the equation for an ellipse and noting the lack of a simple exact formula for its perimeter.
- Some participants emphasize the importance of defining "oval" before proceeding with any calculations or discussions.
- One participant mentions that the discussion may lead to broader topics related to elliptic integrals and numerical methods for calculating perimeters.
Areas of Agreement / Disagreement
Participants do not reach a consensus on the definition of "oval," leading to multiple competing views regarding the appropriate formula and approach to the problem. The discussion remains unresolved as participants await clarification from the original poster (OP).
Contextual Notes
The discussion highlights limitations in the clarity of terminology, particularly regarding the term "oval," which affects the applicability of proposed formulas. There are also unresolved mathematical steps related to the exact calculation of the perimeter.
- #2
antipreplaydee
- 3
- 0
please help i need a formula to solve my problem. i need a formula to find the perimeter of an oval
- #3
antipreplaydee
- 3
- 0
c`mon. i seriously need help.
- #4
Integral
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Approximately
p =2 \pi \sqrt { \frac {a^2 + b^2} 2}}
Where a and b are the "radius" .
If you want exact you will need to be able to evaluate an elliptic integral... You up for that?
p =2 \pi \sqrt { \frac {a^2 + b^2} 2}}
Where a and b are the "radius" .
If you want exact you will need to be able to evaluate an elliptic integral... You up for that?
- #5
HallsofIvy
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What, exactly, do Y0U mean by "oval". I might be inclined to assume a quadratic formula, but it seems clear that you do do not p[/b}] \pmean tnat
- #6
Kb1jij
- 19
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Do you mean an ellipse? This is a specific type of an "oval" and is like a streched out circle. It follows the formula:
\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1
Unfortunately, there is not a simple exact formula for the perimeter of an ellipse. You might want to check out this website for more information: http://home.att.net/~numericana/answer/ellipse.htm#elliptic
\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1
Unfortunately, there is not a simple exact formula for the perimeter of an ellipse. You might want to check out this website for more information: http://home.att.net/~numericana/answer/ellipse.htm#elliptic
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- #7
HallsofIvy
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Until you can say what you mean by "oval" I'm afraid this makes no sense at all.
- #8
Lobdell
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Here's a webpage that has a few area formulas, including the formula for an ellipse: http://www.math.com/tables/geometry/areas.htm
Hope that helps.
Hope that helps.
- #9
Integral
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I have made a call on this thread. I will assume that by "oval" means ellipse. Further, this is not a homework question. Until the OP checks back in there is not really much more to be said.
The formula I provided is for the perimeter of an ellipse. The precise method, which may well be in fact the basis for the name Elliptic Intergral, is beyond fundamental math and may be best done numerially. Thus it may provide the basis for a broader dissussion of an interesting topic.
The formula I provided is for the perimeter of an ellipse. The precise method, which may well be in fact the basis for the name Elliptic Intergral, is beyond fundamental math and may be best done numerially. Thus it may provide the basis for a broader dissussion of an interesting topic.
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