Whakaoti i te 1/2*37.5*21.8

$$1 / 2 \times 37.5 \times 21.8$$

Aromātai

$$408.75$$

Ngā Upane Otinga

Me tahuri ki tau ā-ira 37.5 ki te hautau \frac{375}{10}. Whakahekea te hautanga \frac{375}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$\frac{1}{2}\times \frac{75}{2}\times 21.8$$

Me whakarea te \frac{1}{2} ki te \frac{75}{2} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{1\times 75}{2\times 2}\times 21.8$$

Mahia ngā whakarea i roto i te hautanga \frac{1\times 75}{2\times 2}.

$$\frac{75}{4}\times 21.8$$

Me tahuri ki tau ā-ira 21.8 ki te hautau \frac{218}{10}. Whakahekea te hautanga \frac{218}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{75}{4}\times \frac{109}{5}$$

Me whakarea te \frac{75}{4} ki te \frac{109}{5} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{75\times 109}{4\times 5}$$

Mahia ngā whakarea i roto i te hautanga \frac{75\times 109}{4\times 5}.

$$\frac{8175}{20}$$

Whakahekea te hautanga \frac{8175}{20} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$\frac{1635}{4}$$

Tauwehe

$$\frac{3 \cdot 5 \cdot 109}{2 ^ {2}} = 408\frac{3}{4} = 408.75$$