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Verified answer
Kelas 6 MatematikaBab Kubus dan Balok
Luas alas = 112
p x l = 112
14 x l = 112
l = 112 / 14
l = 8 cm
Luas permukaan
= 2 x (p x l + p x t + l x t)
= 2 x (14 x 8 + 14 x 5 + 8 x 5)
= 2 x (112 + 70 + 40)
= 2 x 222
= 444 cm²