Answer: 125 cubes
Step-by-step explanation: In each side first layer for the width, 11 cubes can fit. Sine 1/4 can fit in one 4 times, 4 * 3 = 12. 12 plus 2 (2/4=1/2) is 14.
11 + 14 = 25.
25 is one layer. Since the height is 1 1/4 inches, multiply 25 by 5.