Whakaoti mō r
r = \frac{4}{\pi} \approx 1.273239545
Tohaina
Kua tāruatia ki te papatopenga
\pi r=4
Tē taea kia ōrite te tāupe r ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te r.
\frac{\pi r}{\pi }=\frac{4}{\pi }
Whakawehea ngā taha e rua ki te \pi .
r=\frac{4}{\pi }
Mā te whakawehe ki te \pi ka wetekia te whakareanga ki te \pi .
r=\frac{4}{\pi }\text{, }r\neq 0
Tē taea kia ōrite te tāupe r ki 0.
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