Yes. The definition of congruent circles is two circles with equal radii. Because the diameter is twice the radius, it is true that the diameters of two congruent circles are the same length.
Yes. congruent means same in length and shape. if 2 circles are congruent, they mean that they have the same diameters. if not then they're not congruent.
The anwser is along the lines of "there are 26 teams in the league, and if each team has 18 players then 26 times 18 is equal to 468 players in the league. hope this helps and dont forget to hit that heart :)
