Question

3. A fence is measured as 12.5 metres long, accurate to 0.1 of a metre is:
A. (12.5+0.05)m
B. (12.5+0.05)m C. (12.5-0.05)m​

Answer 1

(a).accurate to means in could be up 0.05 m either way .

lengthy =12.5 +0.05 m

So, it could really be anywhere between 12.45m and 12.55 m long.