Whakaoti i te (1/2*105)*(1/2*875)*pi=

$$( \frac { 1 } { 2 } \times 105 ) \times ( \frac { 1 } { 2 } \times 875 ) \times \pi =$$

Aromātai

$$\frac{91875\pi }{4}\approx 72158.456262141$$

Ngā Upane Otinga

Whakareatia te \frac{1}{2} ki te 105, ka \frac{105}{2}.

$$\frac{105}{2}\times \frac{1}{2}\times 875\pi$$

Me whakarea te \frac{105}{2} ki te \frac{1}{2} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{105\times 1}{2\times 2}\times 875\pi$$

Mahia ngā whakarea i roto i te hautanga \frac{105\times 1}{2\times 2}.

$$\frac{105}{4}\times 875\pi$$

Tuhia te \frac{105}{4}\times 875 hei hautanga kotahi.

$$\frac{105\times 875}{4}\pi$$

Whakareatia te 105 ki te 875, ka 91875.

$$\frac{91875}{4}\pi$$