To determine the height of the boy drawn to a scale of 1:100, you'll need to know the height of the boy in real life or in another context (like the height given in a drawing or image).
Assuming you have a measurement from the drawing, you can use the scale factor to calculate the actual height. If, for example, the boy's height in the drawing measures 2 cm, you would calculate his real height as follows:
Real height = Drawing height × Scale factor Real height = 2 cm × 100 = 200 cm
If you provide a specific measurement, I can help you calculate the height accurately!