Whakaoti i te 4pi*10^-75000*2.5/0.2

$$4 \pi \times { 10 }^{ -7 } \frac{ 5000 \times 2.5 }{ 0.2 }$$

Aromātai

$$\frac{\pi }{40}\approx 0.078539816$$

Ngā Upane Otinga

Tātaihia te 10 mā te pū o -7, kia riro ko \frac{1}{10000000}.

$$4\pi \times \frac{1}{10000000}\times \frac{5000\times 2.5}{0.2}$$

Whakareatia te 4 ki te \frac{1}{10000000}, ka \frac{1}{2500000}.

$$\frac{1}{2500000}\pi \times \frac{5000\times 2.5}{0.2}$$

Whakareatia te 5000 ki te 2.5, ka 12500.

$$\frac{1}{2500000}\pi \times \frac{12500}{0.2}$$

Whakarohaina te \frac{12500}{0.2} mā te whakarea i te taurunga me te tauraro ki te 10.

$$\frac{1}{2500000}\pi \times \frac{125000}{2}$$

Whakawehea te 125000 ki te 2, kia riro ko 62500.

$$\frac{1}{2500000}\pi \times 62500$$

Whakareatia te \frac{1}{2500000} ki te 62500, ka \frac{1}{40}.

$$\frac{1}{40}\pi$$