I answered this question about three days ago. All you had to do was multiply two numbers, which I provided. Please read it again and perform the remaining step.
http://www.jiskha.com/display.cgi?id=1269724510
The great galaxy in Andromeda has an angular diameter along its long axis of about 5 degree. Its distance is about 2.2 million light years. What is its linear diameter?
3 answers
191000ly
It was 2*pie*2.2(5/360)=.1919*10=1.92 rounded
2 answers