Numbers of Any Magnitude, SMB-003 The width of a hockey field is measured to be 45 metres, correct to the nearest metre. What is the upper limit for the width of the hockey field? (2 marks) Show Answers Only `45.5\ text(m)` Show Worked Solution `text{Absolute error}\ =1/2 xx text{precision}\ = 1/2 xx 1 = 0.5\ text{m}` `=>\ text{True length could lie 0.5 metres either side of 45 m measurement.}` `:.\ text(Upper limit)` `= 45+0.5` `= 45.5\ text(m)`