Whakaoti mō r
r = \frac{111}{2 \pi - 1} \approx 21.010052373
Tohaina
Kua tāruatia ki te papatopenga
\left(2\pi -1\right)r=111
Pahekotia ngā kīanga tau katoa e whai ana i te r.
\frac{\left(2\pi -1\right)r}{2\pi -1}=\frac{111}{2\pi -1}
Whakawehea ngā taha e rua ki te 2\pi -1.
r=\frac{111}{2\pi -1}
Mā te whakawehe ki te 2\pi -1 ka wetekia te whakareanga ki te 2\pi -1.
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