Math challange

[Magnusbon]

Find the circumference of this ellipse:
10826x4916

First who gets the answer with less than 20 in difference to the real answer wins a  

also the answer needs to be in decimal form

[Ad Bot]

[Linkusofepica]

25,600.

[Magnusbon]

25,600.

BEEB wrong answer!

[dkamm65]

26412.68

[Linkusofepica]

BEEB wrong answer!

26412.68049300022 do I win?

[dkamm65]

26412.68049300022 do I win?

No.

[Nasoa]

about 26413

[ravencroft]

Not sure if I remembered the formula correctly, but I got 26412.43

[Waru]

Reading challenge:

Spell challenge correctly

[Magnusbon]

26412.68049300022 do I win?

you dont need to be perfect but your answer was WAY off

[Tonkka²]

Reading challenge:

Spell challenge correctly

chelghsnge

[Linkusofepica]

Reading challenge:

Spell challenge correctly

Challenge, do I win a cookie?

[Pacnet2012³]

you dont need to be perfect but your answer was WAY off

http://www.csgnetwork.com/circumellipse.html ?

[Magnusbon]

http://www.csgnetwork.com/circumellipse.html ?

that is an approximation.
i made this because it is a hard thing to do if you want to calculate the real value you need the infinite sum formula.

[Demian]

Wolfram Alpha is hard to use: http://www.wolframalpha.com/input/?i=circumference+ellipse+10826x4916