We will first convert all units to meters and then solve the problem. We are given that: 1000 mm = 1 m 120 mm = ?? meters using cross multiplication: 120 mm = (120*1) / 1000 = 0.12 m
Now, when the two objects are placed over each other, their total height is the result of summation of both heights, therefore: total height = 0.12 + 1.5 = 1.62 m
Based on the above calculations, the correct choice is: <span>b) 1.62 m </span>