Datrys (2.5)text{y}(12.5)text{yverticesen}(4.5)text{y}(10.5)

$$( 2.5 ) \text { y } ( 12.5 ) \text { y vertices en } ( 4.5 ) \text { y } ( 10.5 )$$

Enrhifo

$$\frac{23625icnrstv\left(ey\right)^{3}}{16}$$

Camau Ateb

Lluosi y a y i gael y^{2}.

$$2.5y^{2}\times 12.5verticesen\times 4.5y\times 10.5$$

Er mwyn lluosi pwerau sy’n rhannu’r un sail, adiwch eu esbonyddion. Adiwch 2 a 1 i gael 3.

$$2.5y^{3}\times 12.5verticesen\times 4.5\times 10.5$$

Lluosi e a e i gael e^{2}.

$$2.5y^{3}\times 12.5ve^{2}rticsen\times 4.5\times 10.5$$

Er mwyn lluosi pwerau sy’n rhannu’r un sail, adiwch eu esbonyddion. Adiwch 2 a 1 i gael 3.

$$2.5y^{3}\times 12.5ve^{3}rticsn\times 4.5\times 10.5$$

Lluosi 2.5 a 12.5 i gael 31.25.

$$31.25y^{3}ve^{3}rticsn\times 4.5\times 10.5$$

Lluosi 31.25 a i i gael 31.25i.

$$31.25iy^{3}ve^{3}rtcsn\times 4.5\times 10.5$$

Lluosi 31.25i a 4.5 i gael 140.625i.

$$140.625iy^{3}ve^{3}rtcsn\times 10.5$$

Lluosi 140.625i a 10.5 i gael 1476.5625i.

$$1476.5625iy^{3}ve^{3}rtcsn$$