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25√2 = s²√2
25 = s²
s = 5
L. perm. kbus = 6s²
= 6 . 5²
=6 . 25
=159
25√2 = s²√2
s² = √25
s = 5 cm
Lp.kubus = 6 x s²
= 6 x 5²
= 6 x 25
= 150 cm²