Odpowiedź:
1. Pp=[tex]\frac{1}{2}[/tex] 10cm*12cm=60[tex]cm^{2}[/tex]
Pc=2*Pp+2(13cm*10cm)+10cm*10cm=(2*60+260+100)[tex]cm^{2}[/tex]=480[tex]cm^{2}[/tex]
2.
Pp=[tex]\frac{(13cm+7cm)*8cm}{2}[/tex]=80[tex]cm^{2}[/tex]
Pc=2Pp+7cm*10cm+8cm*10cm+13cm*10cm+10cm*10cm=
=(2*80+70+80+130+100)[tex]cm^{2}[/tex]=540[tex]cm^{2}[/tex]
3. Pp=[tex]\frac{16cm*12cm}{2}[/tex]=192[tex]cm^{2}[/tex]
Pc=2*Pp+4(10cm*10cm)=2*192[tex]cm^{2}[/tex]+400[tex]cm^{2}[/tex]=784[tex]cm^{2}[/tex]
Szczegółowe wyjaśnienie:
