Whakaoti mō r
r = \frac{19}{\pi} \approx 6.047887837
Tohaina
Kua tāruatia ki te papatopenga
2\pi r=38
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
\frac{2\pi r}{2\pi }=\frac{38}{2\pi }
Whakawehea ngā taha e rua ki te 2\pi .
r=\frac{38}{2\pi }
Mā te whakawehe ki te 2\pi ka wetekia te whakareanga ki te 2\pi .
r=\frac{19}{\pi }
Whakawehe 38 ki te 2\pi .
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