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Lp = 2 (pxl + pxt + lxt)
= 2 ( 12x10 + 12x6 + 10x6)
= 2 ( 120 + 72 + 60 )
= 2 ( 252)
= 504 cm²
jawabannya A .504 cm²
2[(12x10) + (10x6) + (12x6)
2(120+60+72)
2x252=504 (A)