A 1:100 scale drawing means that every measurement on the drawing represents 100 times that measurement in real life. Here's how to work with it:
Understanding the 1:100 Scale
The ratio 1:100 signifies that:
- 1 unit of measurement on the drawing corresponds to 100 of the same units of measurement in reality.
For example:
- 1 cm on the drawing = 100 cm in real life
- 1 inch on the drawing = 100 inches in real life
- 1 mm on the drawing = 100 mm in real life
Converting Drawing Measurements to Real-World Measurements
To find the actual size of an object represented in a 1:100 scale drawing:
- Measure the length on the drawing. Use a ruler or other measuring tool to determine the dimension you're interested in. Let's say it's 5 cm.
- Multiply the drawing measurement by 100. Since the scale is 1:100, multiply the drawing measurement by 100 to get the real-life measurement in the same units. So, 5 cm * 100 = 500 cm.
- Convert to a more practical unit (optional). 500 cm can be converted to meters: 500 cm / 100 = 5 meters. So, 5 cm on the drawing represents 5 meters in real life.
Converting Real-World Measurements to Drawing Measurements
To represent a real-life object on a 1:100 scale drawing:
- Measure the real-life length. Determine the actual size of the object. Let's say it's 8 meters.
- Convert to a smaller unit (optional, but often helpful). Convert the measurement to centimeters: 8 meters * 100 = 800 cm.
- Divide the real-life measurement by 100. Divide the real-life measurement (in cm) by 100 to get the drawing measurement. So, 800 cm / 100 = 8 cm.
- Draw the object. Draw the object on paper using the calculated drawing measurement (8cm in this case).
Example Table
| Feature | Drawing Measurement (1:100 scale) | Real-Life Measurement |
|---|---|---|
| Wall Length | 3 cm | 300 cm (3 meters) |
| Door Width | 0.9 cm | 90 cm (0.9 meters) |
| Window Height | 1.2 cm | 120 cm (1.2 meters) |
Working with a 1:100 scale drawing involves converting measurements between the drawing and reality by multiplying or dividing by 100, depending on which direction you're converting.
