Tom made a scale drawing of his bedroom. The his room is 3 millimeters long in the drawing. The actual room is 12 meters long. What scale did Tom use for the drawing?

Answer 1

To find the scale, we can set up a proportion using the lengths in the drawing and the actual length:

3 millimeters (drawing) = 12 meters (actual)

Let x represent the scale factor.

3/x = 12/1

Cross multiply:

3 * 1 = 12 * x

3 = 12x

Divide by 12:

3/12 = x

x = 1/4

Therefore, Tom used a scale of 1:4 for the drawing of his bedroom.