a) Pp = 5*6 = 30 cm2 (Pp - Pole podstawy)
Ps1 = 5*9 = 45 cm2 (Ps1 - Pole 1 ściany)
Ps2 = 6*9 = 54 cm2 (Ps2 - Pole 2 ściany)
Pc = 2*Pp+ 2*Ps1 + 2*Ps2 = 30*2 + 45*2 + 54*2 = 60 cm2 + 90 cm2 + 108 cm2 = 258 cm2
b) 20 cm x 50 cm x 10 cm
Pp = 20 * 50 = 1000 cm2
Ps1 = 20 * 10 = 200 cm2
Ps2 = 50 * 10 = 500 cm2
Pc = 2*Pp+ 2*Ps1 + 2*Ps2 = 1000*2 + 200*2 + 500*2 = 2000 + 400 + 1000 = 3400 cm2
c) 11 cm x 11 cm x 11 cm
Pp = 11 * 11 = 121 cm2
Pb = 11 * 11 * 4 = 121 * 4 = 484 cm2
Pc = 121 *2 + 484 cm2 = 242 + 484 cm2 = 726 cm2
