A) p=d1 ×d2 :2 =12×16:2=96
B) p= a×h :2= 14×7:2= 49
C) p=(a+b) ×h :2=(6+8)×5:2=14×5:2=35
D)p=a×h =12×14=168
(oczywiscie wszystkie wyniki w jednostkach kwadratowych)
Zad 2
A) alfa (to takie L) =50°
Beta (to takie B) =180°-120=60°
I to 3 =180°-50°- beta =180°-50°-60°=70°
B) Beta (to takie B) =130°
Alfa (to takie L) =180°-120°=60°
Zad 3
[tex]a {}^{2} + b {}^{2} = c {}^{2} [/tex]
A kwadrat =5 do kwadratu
B kwadrat =X do kwadratu
C kwadrat =13 do kwadratu
[tex]25 + {x}^{2} = 169[/tex]
[tex] {x}^{2} = 169 - 25 = 144[/tex]
[tex] {x }^{2} = 144[/tex]
[tex]x = \sqrt{144} = 12[/tex]
