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Keliling alas = 60 cm
Dijawab :
K = 4s
60 = 4s
s = 60/4
s = 15 cm
Maka,
Luas permukaan = 6s²
= 6 . 15 . 15
= 1350 cm²
Itu jawabannya.
60 = 4 x sisi
sisi = 60/4
sisi = 15 cm
Luas kubus = 6 x sisi x sisi = 6 x 15 x 15 = 1350 cm2.