Datrys -663div4pi*1/36pi*10^-9

$$-663 \div 4 \pi \times \frac{ 1 }{ 36 } \pi \times { 10 }^{ -9 }$$

Enrhifo

$$-\frac{221\pi ^{2}}{48000000000}\approx -0.000000045$$

Camau Ateb

Lluosi \pi a \pi i gael \pi ^{2}.

$$\frac{-663}{4}\pi ^{2}\times \frac{1}{36}\times 10^{-9}$$

Gellir ailysgrifennu \frac{-663}{4} fel -\frac{663}{4} drwy echdynnu’r arwydd negatif.

$$-\frac{663}{4}\pi ^{2}\times \frac{1}{36}\times 10^{-9}$$

Lluosi -\frac{663}{4} a \frac{1}{36} i gael -\frac{221}{48}.

$$-\frac{221}{48}\pi ^{2}\times 10^{-9}$$

Cyfrifo 10 i bŵer -9 a chael \frac{1}{1000000000}.

$$-\frac{221}{48}\pi ^{2}\times \frac{1}{1000000000}$$

Lluosi -\frac{221}{48} a \frac{1}{1000000000} i gael -\frac{221}{48000000000}.

$$-\frac{221}{48000000000}\pi ^{2}$$