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Verified answer
Kelas 6 MatematikaBab Luas dan Volume
Luas alas = 40
p x l = 40
p x 5 = 40
p = 40/5
p = 8 cm
Luas permukaan
= 2 x (p x l + p x t + l x t)
= 2 x (8 x 5 + 8 x 12 + 5 x 12)
= 2 x (40 + 96 + 60)
= 2 x 196
= 392 cm²