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Tanya : Luas Permukaan Balok
Jawab : LPB : (3*p)+(3*l)
: (3*175)+(3*80)
: 525+240
: 765 cm=7650dm
= (2x1,75) + (2x0,8) + (2x0,75)
= (3,5) + (1,6) + (1,5)
= 6,6 m persegi
maaf kalau salah :)