Tolong dikumpulin besok… No 12. Pakai cara,jawaban sesuai ABCD yg disitu

Jawaban:

Lp kubus = 6 × s²

Lp kubus = 6 × 10² = 600cm²

Lp balok = 2( pl + pt +lt)

Lp balok = 2(30.10 + 30.10 + 10.10)

Lp balok = 2(300 +300 + 100)= 1400cm²

Lp kubus + Lp balok

=600 +1400=2000cm²