Mohon bantuannya kakak
Luas Permukaan
= Lp balok + Lp Kubus – 2 (Alas Kubus)
= 2 (pl + pt + lt) + 6r² – 2r²
= 2 ( (6 × 4) + (6 × 5) + (4 × 5) ) + 6 (4)² – 2 (4)²
= 2 (24 + 30 + 20) + 6 ( 16 ) – 2 ( 16 )
= 2 (74) + 96 – 32
= 148 + 96 – 32
= 212 cm²
Mohon bantuannya kakak
= Lp balok + Lp Kubus – 2 (Alas Kubus)
= 2 (pl + pt + lt) + 6r² – 2r²
= 2 ( (6 × 4) + (6 × 5) + (4 × 5) ) + 6 (4)² – 2 (4)²
= 2 (24 + 30 + 20) + 6 ( 16 ) – 2 ( 16 )
= 2 (74) + 96 – 32
= 148 + 96 – 32
= 212 cm²