Answer:4Step-by-step explanation:V = [tex]a^{3}[/tex]To get a side length, you have to do the cube root of 64.4 is the cube root of 64.To find the cube root of a number, you want to find some number that when multiplied by itself twice gives you the original number. In other words, to find the cube root of 64, you want to find the number that when multiplied by itself twice gives you 64. The cube root of 64, then, is 4, because 4 Γ 4 Γ 4 = 64.