Question

If a radio wave has speed 3.00 *10^8 m/s and frequency 94.7 MHz, what is its wavelength? ​

Answer 1

$We \: know \: that, \: c = λv \\ thus \: \: λ = \frac{c}{v} = \frac{3 \times {10}^{8} \: m {s}^{ - 1} }{94.7 \times {10}^{6} } \\ = 3.16789863≈3.17 \: m$

Hope this helps :)