Cube diagonal

Determine the length of the cube diagonal with edge 23 km.

Correct answer:

d =  39.8372 km

Step-by-step explanation:

a=23 km s2 = a2+a2 = 2a2  d2 = a2 + s2 d2 = a2 + 2a2 d2 = 3a2  d=3 a=3 23=23 3=39.8372 km



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