Odpowiedź :
Pp = 1/2 * 3 * 4 = 6cm^2
Pb = 3 * 8 + 4 * 8 + 5 * 8 = 24 + 32 + 40 = 96cm^2
P = 2Pp + Pb = 2 * 6 + 96 = 12 * 96 = 108cm^2
Pp = 1/2* 3 * 4 = 6 cm^2 Pb=3*8+ 4* 8+5*8 = 24 + 32 + 40 = 96cm^2 P = 2Pp+ Pb=2*6 +96= 12 * 96 = 108cm^2