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Lp = 2 (pxl + pxt + lxt)
= 2 (18x12 + 18x9 + 12x9)
= 2 ( 216 + 162 + 108)
= 2 ( 486 )
= 972 cm²
jawabnnya 972 cm²
= 2 (18 cm . 12 cm + 18 cm . 9 cm + 12 cm . 9 cm)
= 2 ( 216 cm + 162 cm + 108 cm)
= 2 (486 cm)
= 972 cm²