Respuesta :

None  of these.  

They are the possible squares of the diagonal
raniahamada10
IF the side length is 10cm , then the length of diagonal of the base of the cube(x) is X² =(10)²+(10)² =200cm  so x = 10√2cm
so the length of diagonal of the cube(y) is
y² = (10)² + (10√2)² =300  so y =10√3cm