Whakaoti i te pi*(11,94/2)^2*7,5=

$$\pi \cdot ( \frac { 11,94 } { 2 } ) ^ { 2 } \cdot 7,5 =$$

Aromātai

$$\frac{1069227\pi }{4000}\approx 839.768922055$$

Ngā Upane Otinga

Whakarohaina te \frac{11.94}{2} mā te whakarea i te taurunga me te tauraro ki te 100.

$$\pi \times \left(\frac{1194}{200}\right)^{2}\times 7.5$$

Whakahekea te hautanga \frac{1194}{200} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\pi \times \left(\frac{597}{100}\right)^{2}\times 7.5$$

Tātaihia te \frac{597}{100} mā te pū o 2, kia riro ko \frac{356409}{10000}.

$$\pi \times \frac{356409}{10000}\times 7.5$$

Whakareatia te \frac{356409}{10000} ki te 7.5, ka \frac{1069227}{4000}.

$$\pi \times \frac{1069227}{4000}$$