Zad.1
P=a*h
108=12*h /12
[tex]h = \frac{108}{12} [/tex]
h=9cm
Zad.2
P=10*6=60
60=12*h
[tex]h = \frac{60}{12} [/tex]
h=5cm
Zad.3
[tex]p = \frac{ef}{2} \\ 10.05 = \frac{3 \times f}{2} \\ 20.1 = 3f \\ f = 20.1 \div 3 = 6.7[/tex]
Zad.4
[tex]p = \frac{(a + b) \times h}{2} \\ p = \frac{(7 + 11) \times 6}{2} = \frac{108}{2} \\ p = 54[/tex]
Zad.5
[tex]p = \frac{4 \times 2}{2} = 4[/tex]
Przepraszam, ale na resztę nie mam czasu
