The speed of a wave is given by the formula:
speed = frequency x wavelength
Here, the frequency is 7050 Hz and the wavelength is 0.257 m. Substituting these values into the formula, we get:
speed = 7050 Hz x 0.257 m
speed = 1811.85 m/s (rounded to two decimal places)
Therefore, the speed of the 7050 Hz wave with a wavelength of 0.257 m is approximately 1811.85 m/s.