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
One decimal place is 0.1 cm. The true length could be as long as 42.8 cm.
To understand why the true length could be as long as 42.8 cm, we need to consider how decimal places work.
When a length is measured to one decimal place, it means that the measurement is rounded to the nearest tenth. In this case, Alec's measurement is 42.7 cm.
To determine the maximum length of the line that Alec measured, we need to consider the rounding process.
Since Alec's measurement is 42.7 cm, we know that the actual length could be anywhere between 42.65 cm (rounded down) and 42.75 cm (rounded up).
However, since we are looking for the greatest possible length, we round up to the next tenth, which is 42.8 cm.
Therefore, the greatest possible length of the line that Alec measured, given his measurement rounded to one decimal place, is 42.8 cm.