Tristan wants to build a square garden in his backyard. If the garden is going to be 64 ft squared, how many feet of material will he need for the perimeter of the garden? *

During the election for class president, 40% of the students voted for kellen, and 60% of the students voted for robbie. 500 students voted in total. how many more students voted for robbie than for kellen? answer with work : )