The length of a notebook 15cm, was measured as 16.8cm. Calculate the percentage error to 2 significant figures.

A.
12.00% 
B.
11.00% 
C.
10.71% 
D.
0.12%
Correct Answer: Option A
Explanation
Error = (16.8cm – 15cm = 1.8cm)
(text{% error} = frac{1.8}{15} times 100% = frac{180}{15})
= (12.00%)