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729 = s³
s = ∛729
s = 9
Jadi, panjang rusuknya adalah 9 cm.
2. V = luas alas x t
245 = luas alas x t
luas alas = 245/5
luas alas = 49
p x l = 49
s² = 49
s = √49
s = 7
Jadi, panjang = 7 dan lebar = 7.
2. 245:5=49 = 7
49 = 7
2).p =7
l = 7