The radius of the milly way is 3.9 x 10 to the 20th power. What is the diameter?
d=2r
~~~~~~~~~~
Diameter of Milky Way is 2 · 3.9×10^{20} = 7.8×10^{20}
The radius of the milly way is 3.9 x 10 to the 20th power. What is the diameter?
d=2r
~~~~~~~~~~
Diameter of Milky Way is 2 · 3.9×10^{20} = 7.8×10^{20}