Answer:
1/2 feet cube
Explanation:
volume of the rectangular prism is V= L*W*H = 1*1*1/2 = 1/2 feet cubed
as there is no gaps between cubes and every cube measure 1/4 feet
so length = 1/4 + 1/4 + 1/4 + 1/4 = 1
width = 1/4 + 1/4 + 1/4 + 1/4 = 1
height = 1/2 feet