Whakaoti i te pi=2pir/d

$$\pi = \frac { 2 \pi r } { d }$$

Whakaoti mō d

$$d=2r$$

$$r\neq 0$$

Ngā Upane Otinga

Tē taea kia ōrite te tāupe d ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te d.

$$\pi d=2\pi r$$

Me whakakore te \pi ki ngā taha e rua.

$$d=2r$$

Tē taea kia ōrite te tāupe d ki 0.

$$d=2r\text{, }d\neq 0$$

Whakaoti mō r

$$r=\frac{d}{2}$$

$$d\neq 0$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia ngā taha e rua o te whārite ki te d.

$$\pi d=2\pi r$$

Whakawhitihia ngā taha kia puta ki te taha mauī ngā kīanga tau taurangi katoa.

$$2\pi r=\pi d$$

Me whakakore te \pi ki ngā taha e rua.

$$2r=d$$

Whakawehea ngā taha e rua ki te 2.

$$\frac{2r}{2}=\frac{d}{2}$$

Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.

$$r=\frac{d}{2}$$