What distance does electromagnetic radiation travel in 55.0 μs?

Electromagnetic radiation is an energy that is known as light. so electromagnetic radiation will have the same speed as the speed of light which is 3 x 10^8 m/s. so the distance it travel at 55 x 10^-6 s is:

D = (3 x 10^8 m/s) (55 x 10^-6 s)

D = 16500 m