Datrys sqrt{27/40}

$$\sqrt{ \frac{ 27 }{ 40 } }$$

Enrhifo

$$\frac{3\sqrt{30}}{20}\approx 0.821583836$$

Camau Ateb

Ailysgrifennu ail isradd y rhaniad \sqrt{\frac{27}{40}} fel rhaniad ail israddau \frac{\sqrt{27}}{\sqrt{40}}.

$$\frac{\sqrt{27}}{\sqrt{40}}$$

Ffactora 27=3^{2}\times 3. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 3} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{3}. Cymryd isradd 3^{2}.

$$\frac{3\sqrt{3}}{\sqrt{40}}$$

Ffactora 40=2^{2}\times 10. Ailysgrifennu ail isradd y lluoswm \sqrt{2^{2}\times 10} fel lluoswm ail israddau \sqrt{2^{2}}\sqrt{10}. Cymryd isradd 2^{2}.

$$\frac{3\sqrt{3}}{2\sqrt{10}}$$

Mae'n rhesymoli enwadur \frac{3\sqrt{3}}{2\sqrt{10}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{10}.

$$\frac{3\sqrt{3}\sqrt{10}}{2\left(\sqrt{10}\right)^{2}}$$

Sgwâr \sqrt{10} yw 10.

$$\frac{3\sqrt{3}\sqrt{10}}{2\times 10}$$

I luosi \sqrt{3} a \sqrt{10}, dylid lluosi'r rhifau dan yr ail isradd.

$$\frac{3\sqrt{30}}{2\times 10}$$

Lluosi 2 a 10 i gael 20.

$$\frac{3\sqrt{30}}{20}$$