Anand has drawn an angle of measure 45° 27' when he was asked to draw an angle of 45° . The percentage error in his drawing is ?

Answer: Option B

Error = (45° 27' - 45° ) = 27'
Accurate measure = 45° = (45 × 60)' = 2700'
∴ Percentage error :
$$\begin{array}{rl}& =\left(\frac{27}{2700}\times 100\right)\%\\ & =1\%\end{array}$$