Odpowiedzi

2010-03-02T14:16:35+01:00
Pabs = 1/2 × a × h
h₁² + (10,5)² = (3,5)²
h₁² = 110,25 - 12,25
h₁ = √98
h₁ = 7√2
Pabs = 1/2 × 21 × 7√2 = 73,5√2

Pabc = 1/2 × a × H
H = h₁ + r
H = 7√2 + 3,5
Pabc = 1/2 × 21 × (7√2 + 3,5) = 10,5 × 7√2 + 10,5 × 3,5
Pabc = 73,5√2 + 36,75