What is 2*2 i do not understand how

Anew fountain in the shape of a hexagon will have 6 sides of equal length. on a scale drawing, the coordinates of the vertices of the fountain are: (7.5,5), (11.5,2), (7.5,−1), (2.5,−1), (−1.5,2), and (2.5,5). how long is each side of the fountain?

This is different from the first one can someone me

Solve 3x-18=2y and 5x-6y=6 by elimination show work