Given that 1 inch (in) = 2.54 centimeters (cm) and that 1 cm = 10 millimeters (mm), what length in inches is equivalent to 2159 mm ?

Rationale

85 inches is equivalent to 2159 millimeters.

To convert millimeters to inches, the amount in millimeters is first converted to centimeters by dividing by 10, as 1 centimeter equals 10 millimeters. The result is then converted to inches by dividing by 2.54, since 1 inch is equal to 2.54 centimeters. Using this conversion factor, 2159 millimeters is equal to 85 inches.

A (85 in) CORRECT

This is the correct answer. Converting 2159 millimeters to inches involves first converting to centimeters (2159 ÷ 10 = 215.9 cm), then converting those centimeters to inches (215.9 ÷ 2.54 = 85 in). Therefore, 2159 mm equals 85 inches.

B (5438.6 in) YOUR ANSWER

This answer is incorrect because it likely results from an incorrect conversion factor. Using the correct conversion factors, 2159 millimeters is equal to 85 inches, not 5438.6 inches.

C (8.5 in) YOUR ANSWER

This answer is incorrect and is significantly smaller than the correct answer. This could be the result of a calculation error, perhaps by converting millimeters directly to inches without first converting to centimeters.

D (548,386 in) YOUR ANSWER

This answer is incorrect because it is exceedingly larger than the correct answer. It's possible that this result could have been obtained by erroneously multiplying 2159 millimeters by the conversion factor for centimeters to inches (2.54), instead of dividing by it.

Conclusion

In conclusion, 2159 millimeters is equivalent to 85 inches. This conversion is achieved by first converting millimeters to centimeters (by dividing by 10) and then converting centimeters to inches (by dividing by 2.54). The remaining options either significantly underestimate or overestimate the correct conversion, indicating potential errors in the application of conversion factors. Understanding these conversion factors and the correct process of applying them is crucial when converting units of measurement.

Given that 1 inch (in) = 2.54 centimeters (cm) and that 1 cm = 10 millimeters (mm), what length in inches is equivalent to 2159 mm ?

85 inches is equivalent to 2159 millimeters.

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