Enrhifo
560\sqrt{2}\approx 791.959594929
Rhannu
Copïo i clipfwrdd
\sqrt{627200}
Lluosi 6400 a 98 i gael 627200.
560\sqrt{2}
Ffactora 627200=560^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{560^{2}\times 2} fel lluoswm ail israddau \sqrt{560^{2}}\sqrt{2}. Cymryd isradd 560^{2}.
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