A pipe’s diameter is 156 mm. How many inches is this?
The correct answer and explanation is:
To convert the diameter of the pipe from millimeters (mm) to inches:
Given:
- Diameter = 156 mm
- 1 inch = 25.4 mm
Conversion:
Inches=Millimeters25.4=15625.4≈6.14 inches\text{Inches} = \frac{\text{Millimeters}}{25.4} = \frac{156}{25.4} \approx 6.14 \text{ inches}
✅ Final Answer:
156 mm is approximately 6.14 inches
📘 300-Word Explanation:
Converting units between the metric and imperial systems is essential in engineering, manufacturing, and construction. Millimeters (mm) are part of the metric system, widely used around the world, while inches are part of the imperial system, mainly used in the United States and a few other countries.
To convert from millimeters to inches, we use the fixed conversion factor: 1 inch=25.4 mm1 \text{ inch} = 25.4 \text{ mm}
This means that one inch contains exactly 25.4 millimeters. So, to find how many inches are in a given number of millimeters, you divide the number of millimeters by 25.4.
In this problem, we were given a pipe with a diameter of 156 mm. Applying the formula: 156÷25.4=6.141732283…156 \div 25.4 = 6.141732283 \ldots
This number is approximately 6.14 inches, which we can round to two decimal places for practicality in measurement.
This kind of conversion is commonly needed when engineers or construction professionals deal with international parts or designs. For example, a European company might manufacture a pipe in millimeters, but an American contractor might need the measurement in inches to match their tools or blueprints.
Understanding how to convert between these units avoids mistakes in manufacturing or installation, where even small discrepancies can cause problems in fit or function. Always ensure proper rounding and consider how precise the measurement needs to be for your task.