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=240 dan 448
= 2(6x5+6x4+5x4)
=2(30+24+20)
=2x74
= 148 cm²
L2 = 2(8x7+8x4+7x4)
= 2(56+32+28)
=2x 116
=232cm²
perbandingan 148 : 232 = 74 :116 = 37: 58
please kalo berkenan jadikan solusi terbaik ya , :)