Odpowiedzi

2009-10-24T13:13:24+02:00
V₁ = (8cm)³ = 512cm³
V₂=V₁=512cm³
V₂ = (12cm)² × h ÷ 3
512cm³ = 48cm² × h
h₁ = 512cm³÷48cm²
h₁ = 10⅔ cm

h₂² = (10⅔ cm)² + (6 cm)²
h₂ ≈ 12,2 cm

Pp ≈ 4 * (12 cm * 12,2 cm ÷ 2) = 292,8 cm²