The wavelength of a wave can be calculated using the formula:
Wavelength = Speed of Light / Frequency
The speed of light in a vacuum is approximately 3x10^8 meters per second (m/s). Substituting the given frequency of 3x10^9 Hz into the formula:
Wavelength = (3x10^8 m/s) / (3x10^9 Hz)
Simplifying the expression:
Wavelength = 0.1 meters
Therefore, the wavelength of the wave with a frequency of 3x10^9 Hz is 0.1 meters (or 10 centimeters).