Calculating the Distance Between Adjacent Holes in a Circular Pattern?

[dramaqueen]

a machinist needs to drill five holes in a circular plate. the centers of the holes must be 8.0 cm from the center of the plate and be spaced in a circular pattern equidistant from each other. How far apart (straight-line distance will the centers of the adjacent holes be placed?

some help here please

 

[Mark44]

What have you tried? You have to make some effort before any of us will weigh in with some pointers.