Ffactor
\frac{\pi \left(A-B\right)d^{2}}{4}
Enrhifo
\frac{\pi \left(A-B\right)d^{2}}{4}
Rhannu
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\frac{A\pi d^{2}-B\pi d^{2}}{4}
Ffactora allan \frac{1}{4}.
\pi d^{2}\left(A-B\right)
Ystyriwch A\pi d^{2}-B\pi d^{2}. Ffactora allan \pi d^{2}.
\frac{\pi d^{2}\left(A-B\right)}{4}
Ailysgrifennwch y mynegiad cyfan wedi'i ffactorio.
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