Odpowiedź:
[tex]P = \frac{(a+b)*h}{2}[/tex]
[tex]P = \frac{(16cm+14cm)*20cm}{2}\\P = \frac{30cm*20cm}{2}\\P = \frac{600cm}{2}\\P = 300cm^{2}[/tex]
[tex]P = \frac{(16m+27m)*20m}{2}\\P = \frac{43m*20m}{2}\\P = \frac{860m}{2}\\P = 430m^{2}[/tex]
[tex]P = \frac{(4,3cm+5,7cm)*35cm}{2}\\P = \frac{10cm*35cm}{2}\\P = \frac{350cm}{2}\\P = 175cm^{2}[/tex]
[tex]P = \frac{(7km+3km)*0,5km}{2}\\P = \frac{10km*0,5km}{2}\\P = \frac{5km}{2}\\P = 2,5km^{2}[/tex]
[tex]h = \frac{2P}{a+b}[/tex]
[tex]h = \frac{2*100cm^{2} }{14cm+6cm}\\h = \frac{200cm^{2} }{14cm+6cm}\\h = \frac{200cm^{2} }{20cm}\\h = 10cm[/tex]
[tex]h = \frac{2*150cm^{2} }{22cm+28cm}\\h = \frac{300cm^{2} }{22cm+28cm}\\h = \frac{300cm^{2} }{50cm}\\h = 6cm[/tex]
