If 1 inch equals 2.54 cm, how many centimeters are in 12 inches?

Prepare for the Praxis Elementary Education: Mathematics CKT (7813) Exam with interactive questions, detailed explanations, and key insights to boost your confidence. Get started now!

To determine how many centimeters are in 12 inches, you start with the conversion factor that 1 inch equals 2.54 centimeters. To find the total in centimeters, you multiply the number of inches by the conversion factor:

12 inches × 2.54 cm/inch = 30.48 cm.

This calculation shows that 12 inches is equivalent to 30.48 centimeters. Therefore, the answer is indeed 30.48 cm, making this the correct choice. This method of using direct multiplication with a known conversion factor is fundamental in dimensional analysis, allowing easy conversions between different units of measurement.

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