Ellipse he kiʻi geometric i loaʻa mai ko lākou mau pōʻai ma o ka hoʻololi affine.
maʻiʻo
ʻĀpana ʻāpana
ʻO ka ʻāpana o kahi ellipse (S) ua like ia me ka huahana o nā lōʻihi o kona mau semiaxes a me ka helu. π:
S= π * a * b
'Ōlelo Aʻo: no ka helu ana i ka waiwai o kekahi helu π hoʻopuni ʻia i 3,14.
Laʻana o kahi pilikia
E huli i ka ʻāpana o ka ellipse inā he 2 knm a me 4 knm kona mau semiax.
Hoʻoholo:
Hoʻololi mākou i ka ʻikepili i ʻike ʻia e mākou e like me nā kūlana o ka pilikia i ke ʻano: S u3,14d 2 * 4 cm * 25,12 cm uXNUMXd XNUMX cm2.