Questions on Geometry: Bodies in space, right solid, cylinder, sphere answered by real tutors!

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Question 103941: I am also having a problem with this.
The diameter of the Milky Way disc is approximately 9x10^20 meters. How lon does it take light, travel at 10^16 m/year to travel across the diameter of the Milky Way?: I am also having a problem with this.
The diameter of the Milky Way disc is approximately 9x10^20 meters. How lon does it take light, travel at 10^16 m/year to travel across the diameter of the Milky Way?
Answer by edjones(2391) About Me  (Show Source):
You can put this solution on YOUR website!
9*10^20/10^16=9*10^4=90,000 yrs