Datrys 4*5/sqrt{2/5}

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

Enrhifo

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

Camau Ateb

Lluosi 4 a 5 i gael 20.

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

Rhannwch 20 â \frac{\sqrt{2}}{5} drwy luosi 20 â chilydd \frac{\sqrt{2}}{5}.

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

Mae'n rhesymoli enwadur \frac{20\times 5}{\sqrt{2}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{2}.

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

Sgwâr \sqrt{2} yw 2.

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

Lluosi 20 a 5 i gael 100.

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

Rhannu 100\sqrt{2} â 2 i gael 50\sqrt{2}.

$$50\sqrt{2}$$