Elips: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
Baris 8:
== Keliling elips ==
; Keliling I
:<math>K \approx 2 \pi \sqrt{\frac{a^2 + b^2}{2}}</math>
; Keliling II (model Ramanujan)
:<math>K \approx \pi \left[3(a+b) - \sqrt{(3a+b)(a+3b)}\right]= \pi \left[3(a+b)-\sqrt{10ab+3(a^2+b^2)}\right]</math>
dan
:<math>K \approx \pi \left(a+b \right) \left(1+ \frac{3h}{10+ \sqrt{4-3h}} \right)</math>
; Keliling III
{{Commons|Category:Parabolas}}
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