Ikinda got confused on this one 25z - 8z + (-3z)

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?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

True or false? a circle could be circumscribed about the quadrilateral below.