Question

A boy measures the length of a straight line as 6.2cm when it actually is 6.6cm.Find the percentage error in his measurement.​

Answer 1

Percentage error

$= \frac{difference \: in \: measurement}{actual \: measurement} \times 100 \\ = \frac{6.2 - 6.6}{6.6} \times 100 \\ = - \frac{0.4}{6.6} \times 100 \\ = - 0.606 \times 100 = - 60.6\%$

Hence, percentage error is -60.6%

Answer 2

Answer:

Answer is in attachment hope it helps