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Penyelesaian :LP balok
= 2 (P x L) + (P x T) + (L x T)
= 2 (15 x 10) + (15 x 8) + (10 x 8)
= (2 x 150) + (120) + (80)
= 300 + 120 + 80
= 420 + 80
= 500 cm²
Semoga Membantu :)
=4(15+10+8)=4(33)=132cm²