Whakaoti i te 1/4*3.14*25-1/2*5*5=

$$\frac { 1 } { 4 } \times 3.14 \times 25 - \frac { 1 } { 2 } \times 5 \times 5 =$$

Aromātai

$$7.125$$

Ngā Upane Otinga

Me tahuri ki tau ā-ira 3.14 ki te hautau \frac{314}{100}. Whakahekea te hautanga \frac{314}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{1}{4}\times \frac{157}{50}\times 25-\frac{1}{2}\times 5\times 5$$

Me whakarea te \frac{1}{4} ki te \frac{157}{50} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{1\times 157}{4\times 50}\times 25-\frac{1}{2}\times 5\times 5$$

Mahia ngā whakarea i roto i te hautanga \frac{1\times 157}{4\times 50}.

$$\frac{157}{200}\times 25-\frac{1}{2}\times 5\times 5$$

Tuhia te \frac{157}{200}\times 25 hei hautanga kotahi.

$$\frac{157\times 25}{200}-\frac{1}{2}\times 5\times 5$$

Whakareatia te 157 ki te 25, ka 3925.

$$\frac{3925}{200}-\frac{1}{2}\times 5\times 5$$

Whakahekea te hautanga \frac{3925}{200} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 25.

$$\frac{157}{8}-\frac{1}{2}\times 5\times 5$$

Whakareatia te \frac{1}{2} ki te 5, ka \frac{5}{2}.

$$\frac{157}{8}-\frac{5}{2}\times 5$$

Tuhia te \frac{5}{2}\times 5 hei hautanga kotahi.

$$\frac{157}{8}-\frac{5\times 5}{2}$$

Whakareatia te 5 ki te 5, ka 25.

$$\frac{157}{8}-\frac{25}{2}$$

Ko te maha noa iti rawa atu o 8 me 2 ko 8. Me tahuri \frac{157}{8} me \frac{25}{2} ki te hautau me te tautūnga 8.

$$\frac{157}{8}-\frac{100}{8}$$

Tā te mea he rite te tauraro o \frac{157}{8} me \frac{100}{8}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{157-100}{8}$$

Tangohia te 100 i te 157, ka 57.

$$\frac{57}{8}$$

Tauwehe

$$\frac{3 \cdot 19}{2 ^ {3}} = 7\frac{1}{8} = 7.125$$