Odpowiedzi

2009-04-16T22:05:31+02:00
A = 3√2 cm
α = 45 stopni
sin45 = ½√2
d₁/3√2=½√2
d₁ = 3 cm

b² = a² - d₁²
b = 3 cm

P = a × b × sinα
P = 3√2 × 3 × ½√2
P = 9 cm²