Answer:
The length of each side of the polyhedron, s is 4.142 or
=
Step-by-step explanation:
If we take the distance of the length of the side of the cube where Donatello make the cut to the corner of the cube as x we get the side of length each polyhedron as
x·√2 because we have an hy
Therefore, the original cube had sides of length
10 = 2·x + x·√2
Solving for x we get
Therefore the length of s is x·√2 which gives
The length of each side of the polyhedron, s = 4.142.