Rysunek pomocniczy w zalacznikach, ale jestes pewien, ze wartosci podane sa w centymetrach?
Dla jednostek w centymetrach:
[tex](4cm)^2+h^2=(5cm)^2\\16cm^2+h^2=25cm^2 /-16cm^2\\h^2=25cm^2-16cm^2\\h^2=9cm^2\\h=3cm\\\\\\\\a=4cm\\b=12cm\\[/tex]
[tex]P=\frac{(a+b)*h}{2}\\P=\frac{(4cm+12cm)*3cm}{2}=\frac{16cm*3cm}{2}=8cm*3cm=24cm^2[/tex]
[tex]24cm^2 = 0,0024m^2[/tex]
[tex]\text{Cena za }1m^2 - 50zl[/tex]
[tex]0.0024m^2*50\frac{zl}{m^2}=0.12zl[/tex]
Dla jednostek w metrach:
[tex]a=4m\\b=12m\\\\(4m)^2+h^2=(5m)^2\\16m^2+h^2=25m^2 /-16m^2\\h^2=25m^2-16m^2\\h^2=9m^2\\h=3m\\\\P=\frac{(a+b)*h}{2}\\P=\frac{(4m+12m)*3m}{2}=\frac{16m*3m}{2}=8m*3m=24m^2[/tex]
[tex]\text{Cena za }1m^2 - 50zl\\\\24m^2*50\frac{zl}{m^2}=120zl[/tex]
