"परिमिती" च्या विविध आवृत्यांमधील फरक

This approximation is within about 5% of the true value, so long as `a' is not more than 3 times longer than `'`b' (in other words, the ellipse is not too "squashed"):

 

 

Approximation 2 :

 

ellipse perimeter (approx) = pi into [ 3(a+b) - square root of ((3a+b)(a+3b))]

 

Approximation 3 :

 

 

h = (a-b)²/(a+b)²

 

Then, ellipse perimeter (approx) = pi(a+b)(1 + 3h/(10+square root of (4-3h))

 

[[वर्ग:भूमिती]]