Whakaoti mō r
r=\frac{a^{2}}{36}
a\geq 0
Whakaoti mō a
a=6\sqrt{r}
r\geq 0
Tohaina
Kua tāruatia ki te papatopenga
6\sqrt{r}=a
Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.
\frac{6\sqrt{r}}{6}=\frac{a}{6}
Whakawehea ngā taha e rua ki te 6.
\sqrt{r}=\frac{a}{6}
Mā te whakawehe ki te 6 ka wetekia te whakareanga ki te 6.
r=\frac{a^{2}}{36}
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