[tex]a)\\Ob=10m+8m+6m=24m\\\\b) \\P=\frac{8m+6m}2=4m*6m=24m^2[/tex]
[tex]c)\\\\\frac{10m*h_1}2=24m^2\\5m*h_1=24m^2 /:5\\h_1=\frac{24m^2}{5m}=4\frac45m\\\bold{h_1=4.8m}\\\\\frac{8m*h_2}2=24m^2\\4m*h_2=24m^2 /:4m\\\bold{h_2=6m}\\\\\frac{6m*h_3}2=24m^2\\3m*h_3=24m^2 /:3m\\h_3=\frac{24}3m\\\bold{h_3=8m}[/tex]
