Physics - Unit & Dimension Question with Solution | TestHub

$\text{A} = \text{ab}$

$\frac{\Delta \text{A}}{\text{A}}=\frac{\Delta \text{a}}{\text{a}}+\frac{\Delta \text{b}}{\text{b}}$

$=\frac{\text{0.1}}{\text{5}}+\frac{\text{0.01}}{2}$

$=\frac{\text{0.2+0.05}}{10}$

$=\frac{0.25}{10}$

$\Delta \text{A}=\text{0.025}\times \text{A}$

$=\text{0.25}{cm}^2$