For this case we assume that the moon is spherical. For definition, the surface area of a sphere is given by:
[tex]S = 4 \pi*r ^ 2[/tex]
Where:
A: It is the radius of the sphere
We have that the radius is 939 leagues.
by definition, 1 league is equivalent to 4.82803 kilometers.
ENtonces 939 leagues represent 4533.52 km.
Substituting:[tex]S = 4 \pi * (4533.52) ^ 2\\S = 20552803.5904 * 4 * \pi\\S = 258,274,147.081[/tex]
It has a surface area of 258,274,147 km
ANswer:
258,274.147 km
