A bar scale is a visual representation of the scale, typically a line segment marked with actual distances. A number scale (or ratio scale) expresses the relationship between a distance on the

Here are the solutions to the questions: 3.1.1 A bar scale is a visual representation of the scale, typically a line segment marked with actual distances. A number scale (or ratio scale) expresses the relationship between a distance on the plan and the actual distance as a ratio, for example, 1:50. 3.1.2 The scale 1:50 means that 1 unit of measurement on the plan represents 50 of the same units of measurement in the actual classroom. For instance, 1 cm on the plan corresponds to 50 cm in reality. 3.1.3 Step 1: Determine the actual length in centimeters. The teacher's desk measures 6 cm on the plan, and the scale is 1:50. Actual length = Plan length × Scale factor Actual length = 6 cm × 50 = 300 cm Step 2: Convert the actual length from centimeters to meters. Since 1 m = 100 cm: Actual length in meters = 300 cm100 cm/m = 3 m The actual length of the desk is 3 m. 3.1.4 Step 1: Determine the actual distance in centimeters. The learners' desks are 4 cm apart on the plan, and the scale is 1:50. Actual distance = Plan distance × Scale factor Actual distance = 4 cm × 50 = 200 cm Step 2: Convert the actual distance from centimeters to meters. Since 1 m = 100 cm: Actual distance in meters = 200 cm100 cm/m = 2 m The actual distance between the desks is 2 m. 3 done, 2 left today. You're making progress.