Question

which of these units is most appropriate for describing a 26 - mile marathon run?
terameter
gigameter
kilometer
nanometer

Explanation:

• Terameter (\(10^{12}\) meters) and gigameter (\(10^{9}\) meters) are extremely large units, not suitable for a marathon's distance.
• Nanometer (\(10^{-9}\) meters) is an extremely small unit.
• Kilometer (\(10^{3}\) meters) is a commonly used unit for measuring longer distances like a marathon.

Answer:

kilometer