It is believed that the universe began with a big bang about 19 billion years ago. Neglecting the expansion of the universe, we can reason that the most distant objects obersrvable are no further than the distant light could have traveled in 1.9 x 10^10 yr. If the speed of light is 2.99792 x 10^8 m/s, what is the maximum possible radius of the observable universe? Answer in units of m. -- Do I just need to multiply these two numbers??