Final answer:
The wavelength of an ocean wave, with the distance between the first and third crest being 24 meters, is 12 meters.
Step-by-step explanation:
The distance between the first and third crest of an ocean wave is 24 meters, but to determine the wavelength of the ocean wave, we need to consider the distance between two consecutive crests. Since the distance given spans over two wavelengths, we would divide 24 meters by 2 to find the wavelength. Therefore, the wavelength of the ocean wave is 12 meters.