One tenth of a line is 5 and a half cm What is the line's total length?

If one tenth of a line is 5 and a half cm, then the total length of the line would be 10 times that amount, which is 55 cm. This is because one tenth represents 1/10th of the total length, so to find the total length, you would need to multiply by 10. Therefore, the line's total length is 55 cm.