Odpowiedź:
1) e = 2 f
P =0,5 e*f = 0,5*2 f*f = f² = 36
f = √36 = 6
e = 2*6 = 12
a² = 3² + 6² = 9 + 36 = 45 = 9*5
a = [tex]\sqrt{9*5}[/tex] = 3 √5
P = a*h = 3√5* h = 36 / : 3
√5 h = 12 ⇒
h = [tex]\frac{12}{\sqrt{5} }[/tex] = 2,4 √5
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2) c = 6
b = 4
a = x + b + x =4 + 2 x
[tex]\frac{x}{6}[/tex] = cos 60° = 0,5
x = 3
a = 4 + 2*3 = 10
h² + x² = 6²
h² = 36 - 9 = 27 = 9*3
h = 3√3
P = [tex]\frac{10 + 4}{2}[/tex] * 3√3 = 21√3
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Szczegółowe wyjaśnienie:
