Whakaoti i te 4*5/sqrt{2/5}

$$\frac { 4 \times 5 } { \frac { \sqrt { 2 } } { 5 } }$$

Aromātai

$$50\sqrt{2}\approx 70.710678119$$

Ngā Upane Otinga

Whakareatia te 4 ki te 5, ka 20.

$$\frac{20}{\frac{\sqrt{2}}{5}}$$

Whakawehe 20 ki te \frac{\sqrt{2}}{5} mā te whakarea 20 ki te tau huripoki o \frac{\sqrt{2}}{5}.

$$\frac{20\times 5}{\sqrt{2}}$$

Whakangāwaritia te tauraro o \frac{20\times 5}{\sqrt{2}} mā te whakarea i te taurunga me te tauraro ki te \sqrt{2}.

$$\frac{20\times 5\sqrt{2}}{\left(\sqrt{2}\right)^{2}}$$

Ko te pūrua o \sqrt{2} ko 2.

$$\frac{20\times 5\sqrt{2}}{2}$$

Whakareatia te 20 ki te 5, ka 100.

$$\frac{100\sqrt{2}}{2}$$

Whakawehea te 100\sqrt{2} ki te 2, kia riro ko 50\sqrt{2}.

$$50\sqrt{2}$$