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tiap rusuk pnjgnya =8/√2
6.s.s= 6. (8/√2)²
= 6. 64.2
= 768
s²= 16 + 16
s = √32
s = 5.6 Cm
Lp = 6 x s²
Lp = 6 x 5,6²
Lp = 188 cm²
maap klo salah ....