Enrhifo
\frac{9\sqrt{7}}{7000000}\approx 0.000003402
Rhannu
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\frac{0.000009\sqrt{7}}{\left(\sqrt{7}\right)^{2}}
Mae'n rhesymoli enwadur \frac{0.000009}{\sqrt{7}} drwy luosi'r rhifiadur a'r enwadur â \sqrt{7}.
\frac{0.000009\sqrt{7}}{7}
Sgwâr \sqrt{7} yw 7.
\frac{9}{7000000}\sqrt{7}
Rhannu 0.000009\sqrt{7} â 7 i gael \frac{9}{7000000}\sqrt{7}.
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