To find the side length of the cube, we can use the formula:
V = s^3
where V is the volume and s is the side length of the cube.
Substituting the given values, we get:
681 = s^3
Taking the cube root of both sides, we get:
s = cuberoot(681)
Using a calculator, we find that cuberoot(681) is approximately 8.5.
Therefore, the side length of the cube with a volume of 681 cm^3 is approximately 8.5 cm (rounded to the nearest tenth).