Answer:Ashton used 390 centimeters of string for his project.
Explanation:
The total length of the piece of string that Ashton has is 520 centimeters.
He cuts the string into 8 equal pieces. This means that the length of each string would be
520/8 = 65 centimeters.
If he 6 of the pieces for a project, it means that the number of centimeters of string that Ashton used for his project would be
65 Ă— 6 = 390 centimeters