Question

Your favorite FM radio station has a wavelength of 1.689 meters. Convert that length to feet...

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?

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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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