You do not. A metre is a measure of distance, a kiloHertz is a measure of frequency. The two measure different things and it makes no sense to convert from one to the other without additional information - for example: whether you are talking about electromagnetic waves, or sound waves, or waves in the ocean or whatever.
About 0.19 miles.
You can not convert 3 meters to 3 centimeters. When you convert 3 meters to centimeters you get 300.
15 cm equals 0.15 meters. Accordingly, the volume is 300 multiplied by 0.15. The result is 45 cubic meters.
500 x 300 = 1500 square meters
300 kph = 83.3333333 meters / second ( 83 1/3 )
300 meters = 1000 kHz. Wavelength in meters / 300 = frequency in megahertz * 1000 = frequency in kilohertz.
"Meters" is not frequency. It's wavelength. If you know the wavelength in meters, divide 300 by it, and the result is the frequency in MHz. If you know the frequency in MHz, divide 300 by it, and the result is the wavelength in meters.
kHz means 1000 hertz. To convert from kHz to hz, multiply the number of kHz by 1000 and the product will be in hertz.
To convert kilohertz (KHz) into hertz (Hz), you multiply the value in kilohertz by 1000. For example, if you have 5 KHz, you would calculate 5 KHz * 1000 = 5000 Hz.
About 0.19 miles.
To convert from meters to centimeters, multiply by 100.
To convert millimeters to meters, you divide the number of millimeters by 1,000. Therefore, 300 millimeters is equal to 0.3 meters.
You can not convert 3 meters to 3 centimeters. When you convert 3 meters to centimeters you get 300.
Multiply by 1,000
For any wave, frequency x wavelength = speed (of the wave). In this case, convert the kHz to Hz, then divide the speed of light by this frequency. The speed of light should be in meters/second. The answer will be the wavelength in meters.
15 cm equals 0.15 meters. Accordingly, the volume is 300 multiplied by 0.15. The result is 45 cubic meters.
1 MHz = 1,000 KHz 1 GHz = 1,000 MHz = (1,000 x 1,000) = 1,000,000 KHz 3.2 GHz = (3.2 x 1,000 x 1,000) = 3,200,000 KHz