Cube diagonal

Determine the length of the cube diagonal with edge 37 mm.

Correct answer:

d =  64.0859 mm

Step-by-step explanation:

a=37 mm s2 = a2+a2 = 2a2  d2 = a2 + s2 d2 = a2 + 2a2 d2 = 3a2  d=3 a=3 37=37 3=64.0859 mm

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