how much is 05 cubic feet
Report Abuse. Coverage depends on your depth. at 2 deep, a half cubic foot of rock will cover 3 square feet. at 3 it's 2 inches. This will be helpful for you to know after you graduate, too! ... and yes...5 cubic feet for a bag of rock is correct. if it were more..you couldn't lift it!eport Abuse. Coverage depends on your depth. at 2 deep, a half cubic foot of rock will cover 3 square feet. at 3 it's 2 inches. This will be helpful for you to know after you graduate, too! ... and yes..