How many cubic blocks with a side length of 1/8 inch are needed to fill a rectangular prism with a length, width, and height of 3/4 inch, 1/2 inch, 1/2 inch, respectively

A) 24

B) 48

C) 96

D) 100

Need 6 along the length, 4 along the width, and 4 along the height.

That would be 96.

Another way is the volume is (3/16) in^3

Volume of each cube is (1/512) in^3

They fill the space completely.

(96/512) = 3/16, when one divides by 32 top and bottom.