Odpowiedzi

2009-05-13T14:30:55+02:00
PPC = 2 × PP + 2 × PB₁ + 2 × PB₂
PP = 10 × 5 = 50cm²
PB₁ = 10 × 3 = 30cm²
PB₂ = 5 × 3 = 15cm²

PPC = 2 × 50 + 2 × 30 + 2 × 15
PPC = 100 + 60 + 30
PPC = 190cm²