Based on the number of projects to be done and their length requirements, we can infer that the yards Nima bought were not enough.
There are 3 projects and each will require 3.6 yards. In total, they will require:
= 3 x 3.6
= 10.8 yards
Nima bought only 10.5 yards which means that Nima will be short by:
= 10.8 - 10.5
= 0.3 yards
In conclusion, Nima does not have enough string for all the projects.
Find out more about such calculations at https://brainly.com/question/793983.