Whakaoti i te 500=3.14*7.5^2*x/4

$$500=3.14 \times { 7.5 }^{ 2 } \times \frac{ x }{ 4 }$$

Whakaoti mō x

$$x = \frac{16000}{1413} = 11\frac{457}{1413} \approx 11.323425336$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia ngā taha e rua o te whārite ki te 4.

$$2000=3.14\times 7.5^{2}x$$

Tātaihia te 7.5 mā te pū o 2, kia riro ko 56.25.

$$2000=3.14\times 56.25x$$

Whakareatia te 3.14 ki te 56.25, ka 176.625.

$$2000=176.625x$$

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

$$176.625x=2000$$

Whakawehea ngā taha e rua ki te 176.625.

$$x=\frac{2000}{176.625}$$

Whakarohaina te \frac{2000}{176.625} mā te whakarea i te taurunga me te tauraro ki te 1000.

$$x=\frac{2000000}{176625}$$

Whakahekea te hautanga \frac{2000000}{176625} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 125.

$$x=\frac{16000}{1413}$$