TOLONG PAKE CARANYA DARI NOMOR 12 DOANG TOLONG JAWAB YA PLIS YA

Bab Bangun Ruang

Sisi depan = p × t
60 = p × 6
p = 60/6
p = 10 cm

Sisi alas = p × l
80 = 10 × l
l = 80/10
l = 8 cm

Luas permukaan
= 2(p×l + p×t + l×t)
= 2(10×8 + 10×6 + 8×6)
= 2(80 + 60 + 48)
= 2(188)
= 376 cm^2