SO CONFUSED PLEASE HELP!!!

A certain radio wave has a wavelength of 7 inches.
a. convert the wavelength of this radio wave into meters. (1 meter = 39.37)
b. find the frequency of this radio wave.

1 answer

7 in x (2.54 cm/in) x (1 m/100 cm)= ? meters = wavelength
Then c = freq x wavlength
You know c and wavelength, calculate freq