Question

Your favorite FM radio station has a wavelength of 1.689 meters. Convert that length to feet using the centimeter to inch conversion factor.

How many significant figures should there be in your answer?

Answer #1

**wavelength = 1.689 m = 168.9 cm**

**use:
1 cm = 0.3937 inch**

**wavelength = 168.9 * 0.3937 inch
=66.50 in**

**1 ft = 12 inch**

**wavelength = 66.50/12 ft
= 5.542 ft
Answer: 5.542 ft**

**4 significant figure**

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