Final answer:
To solve the given expression, divide 2.668 km by 52.3 m and round the answer to the correct number of significant figures, resulting in approximately 51 m.
Step-by-step explanation:
To solve for the given expression using the correct number of significant figures, you need to divide 2.668 km by 52.3 m. First, convert the km to meters by multiplying by 1000, resulting in 2668 meters. Then divide 2668 by 52.3, giving you approximately 51 meters. Since 2.668 km has four significant figures and 52.3 m has three significant figures, the answer should be rounded to three significant figures, which is 51 m.