What does 48 inches equal in meters, given that 1 inch = 25.4 mm?

• A. 1.1408
• B. 1.2192
• C. 1.2700
• D. 1.5000

Answer: (B)

To convert inches to meters, it is essential first to convert inches to millimeters and then millimeters to meters. Since 1 inch equals 25.4 millimeters, multiplying the number of inches by this conversion factor will give the result in millimeters.

For 48 inches:

• First, calculate the number of millimeters:

(48 \text{ inches} \times 25.4 \text{ mm/inch} = 1219.2 \text{ mm}).

Next, to convert millimeters to meters, note that there are 1000 mm in a meter. Thus, you would divide the total millimeters by 1000:

• (1219.2 \text{ mm} \div 1000 = 1.2192 \text{ meters}).

This calculation confirms that 48 inches is equal to 1.2192 meters, making the second choice the correct answer. Understanding the conversion process and the relationship between inches, millimeters, and meters is essential in pipefitting and similar fields, as accurate measurements are crucial for the installation of piping systems.