Answer:
a = 8 cm, as cube root of 512 is 8. The side lengths (edges) are 8 cm.
Step-by-step explantation
8 cubic feet = 2 feet 512 cubic feet.
First you Multiply your length, width and height figures together, giving you a total in cubic inches (in3)Divide the total by 512 (as there are 512 cubic inches in a cubic foot) it equals to 8 meaning your answer is correct. I f not it wrong and I already look this this up its 8