National Occupational Competency Testing Institute (NOCTI) Carpentry Practice Exam

On a drawing with a scale of 3/4 inch = 1 foot, what does a line measuring 14 inches represent in actual distance?

1. 10 feet

2. 14 feet

3. 18 feet

4. 20 feet

The correct answer is: 20 feet

To determine the actual distance represented by a line measuring 14 inches on a drawing with a scale of 3/4 inch = 1 foot, it is essential to understand how to convert the drawing measurement into the real-world distance. The scale of 3/4 inch = 1 foot means that for every 3/4 of an inch on the drawing, it represents a full foot in reality. To find out how many full feet are represented by a 14-inch line, you can set up a proportion based on this scale. First, you can convert 3/4 inch to a fraction for calculations. To do this, divide the drawing measurement (14 inches) by the scale measurement (3/4 inch): 1. Calculate how many 3/4 inches fit into 14 inches: - Convert 14 inches into a fraction of 3/4 inches: - 14 inches divided by (3/4) equals 14 inches multiplied by (4/3), which simplifies to: - 14 * 4 / 3 = 56 / 3 = 18.67 feet (approximately). Alternatively, the calculation method can also include finding out how many complete feet this represents. For every