[tex]\displaystyle Se~da:\\ \\
F=500cm=5m\\ \\
d=380000km=3,8\times 10^8m\\ \\
h_0=3500km=3,5\times 10^6m\\ \\
h=?cm\\ \\ \\ [/tex]
[tex] \displaystyle Formule:\\ \\ \Gamma=\frac h{h_0}=\frac fd\\ \\ h=\frac{h_0\times f}{d}\\ \\ \\ \frac 1F=\frac 1d+\frac 1f\\ \\ \frac 1f=\frac 1F-\frac 1d\\ \\ \frac 1f=\frac {d-F}{d\times F}\\ \\ f=\frac{d\times F}{d-F}\\ \\ \\ h=\frac{h_0\times d\times F}{d\times(d-F)}\\ \\ h=\frac{h_0\times F}{d-F}\\ \\ \\[/tex]
[tex]\displaystyle Calcule:\\ \\
h=\frac{3,5\times 10^6\times 5}{3,8\times 10^8-5}\approx 0,046m=4,6cm[/tex]
