Alec measures the length of a line accurately. His answer, correct to 1 decimal place , is 42.7 cm. What is the greatest line of the line

I did not understand the last bit can someone help with it please

thanx

The greatest length? 42.74 cm

To determine the greatest length of the line given Alec's measurement, you need to consider the range of possible values within the given level of accuracy. In this case, the measurement is given correct to 1 decimal place, which means the actual length could be anywhere between 42.65 cm and 42.75 cm.

Since you are looking for the greatest length, you can round up to the highest value within this range, which is 42.7 cm. However, if you wanted the smallest length, you would round down to 42.6 cm.

Therefore, the greatest length of the line based on Alec's measurement of 42.7 cm, correct to 1 decimal place, is 42.7 cm.