Step-by-step explanation:
C IS THE ANSWER!
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The volume of a cube with side length s is given by s^3.
s^3 = 512
s = cube root of 512 = 8.
The side length of the square is 8
2.45 is NOT bigger that 2 13/25.
13/25 x 4 = 52/100 (.52)
2.45 < 2.52