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rozpatrujemy przedziały:
y ≥ 0 i x ≥ - 2
x + 2 + 3y ≤ 3
y ≤ 1/3 - x/3
y ≥ 0 i x < - 2
- x - 2 + 3y ≤ 3
y ≤ 5/3 + x/3
y < 0 i x ≥ - 2
x + 2 - 3y ≤ 3
y ≥ - 1/3 + x/3
y < 0 i x < - 2
- x - 2 - 3y ≤ 3
y ≥ - 5/3 - x/3
z tw. Pitagorasa:
(a + b)² = 1² + 3² = 10
R² + a² = 1²
R² + (√10 - a)² = 3²
a² - (√10 - a)² = - 8
10 - 2√10a = 8
a = 1/√10
R² = 1 - a² = 9/10
R = 3/√10
P = πR² = 9π/10
jak masz pytania to pisz na pw