Myriah wants to use dimensional analysis to find out how many centimeters (cm) are in 1.4 meters (m). Which of these equalities will be useful for this calculation?

To convert meters to centimeters, use an equality that relates those two units: 100 cm = 1 m. Then 1.4 m × (100 cm / 1 m) = 140 cm; the meter units cancel. The other equalities involve inches or millimeters, so they do not directly give the needed conversion.

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