Datrys sqrt{(2.5*10^-4)^2+(0.1*10^-2)^2}

$$\sqrt { ( 2.5 \times 10 ^ { - 4 } ) ^ { 2 } + ( 0.1 \times 10 ^ { - 2 } ) ^ { 2 } }$$

Enrhifo

$$\frac{\sqrt{17}}{4000}\approx 0.001030776$$

Camau Ateb

Cyfrifo 10 i bŵer -4 a chael \frac{1}{10000}.

$$\sqrt{\left(2.5\times \frac{1}{10000}\right)^{2}+\left(0.1\times 10^{-2}\right)^{2}}$$

Lluosi 2.5 a \frac{1}{10000} i gael \frac{1}{4000}.

$$\sqrt{\left(\frac{1}{4000}\right)^{2}+\left(0.1\times 10^{-2}\right)^{2}}$$

Cyfrifo \frac{1}{4000} i bŵer 2 a chael \frac{1}{16000000}.

$$\sqrt{\frac{1}{16000000}+\left(0.1\times 10^{-2}\right)^{2}}$$

Cyfrifo 10 i bŵer -2 a chael \frac{1}{100}.

$$\sqrt{\frac{1}{16000000}+\left(0.1\times \frac{1}{100}\right)^{2}}$$

Lluosi 0.1 a \frac{1}{100} i gael \frac{1}{1000}.

$$\sqrt{\frac{1}{16000000}+\left(\frac{1}{1000}\right)^{2}}$$

Cyfrifo \frac{1}{1000} i bŵer 2 a chael \frac{1}{1000000}.

$$\sqrt{\frac{1}{16000000}+\frac{1}{1000000}}$$

Adio \frac{1}{16000000} a \frac{1}{1000000} i gael \frac{17}{16000000}.

$$\sqrt{\frac{17}{16000000}}$$

Ailysgrifennu ail isradd y rhaniad \sqrt{\frac{17}{16000000}} fel rhaniad ail israddau \frac{\sqrt{17}}{\sqrt{16000000}}.

$$\frac{\sqrt{17}}{\sqrt{16000000}}$$

Cyfrifo ail isradd 16000000 a chael 4000.

$$\frac{\sqrt{17}}{4000}$$