Enrhifo
12\sqrt{6}\approx 29.393876913
Rhannu
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4\sqrt{3}\sqrt{18}
Ffactora 48=4^{2}\times 3. Ailysgrifennu ail isradd y lluoswm \sqrt{4^{2}\times 3} fel lluoswm ail israddau \sqrt{4^{2}}\sqrt{3}. Cymryd isradd 4^{2}.
4\sqrt{3}\times 3\sqrt{2}
Ffactora 18=3^{2}\times 2. Ailysgrifennu ail isradd y lluoswm \sqrt{3^{2}\times 2} fel lluoswm ail israddau \sqrt{3^{2}}\sqrt{2}. Cymryd isradd 3^{2}.
12\sqrt{3}\sqrt{2}
Lluosi 4 a 3 i gael 12.
12\sqrt{6}
I luosi \sqrt{3} a \sqrt{2}, dylid lluosi'r rhifau dan yr ail isradd.
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