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t limas = 8
tsegitiga = akar 6kuadrat + 8kuadrat
=akar 36 + 64
=akar100
tsegitiga = 10
luas segitiga = 10.12/2
Lsegitiga = 60cm
L total = 60cm.4 + 12.12
= 240 cm + 144
L total = 384 cm
jadi luas permukaan limas = 384 cm