Oblicz pole powierzchni prostopadłościanów o krawędziach: a) 2cm x 5cm x 10 cm b) 2cm x 2cm x 7cm

a) Pc = 2Pb₁+2Pb₂ + 2Pp = 2*2*5+2*2*10+2*5*10=20+40+100=160cm² b) Pc=2*2*2+2*2*7+2*2*7=64 cm²

a) Pc= 2*2cm*5cm+2*5cm*10cm+2*2cm*10cm Pc= 20cm²+100cm²+40cm² Pc= 160cm² b) Pc= 4*2cm*7cm+2*2cm*2cm Pc= 56cm²+8cm² Pc= 64cm²

Pc= 2ab + 2bc + 2ac a) 2cm x 5cm x 10 cm Pc = 2 × 2 × 5 + 2 × 5 × 10 + 2 × 2 × 10 Pc = 20 + 100 + 40 Pc = 160 [cm²] b) 2cm x 2cm x 7cm Pc = 2 × 2 × 2 + 2 × 2 × 7 + 2 × 2 × 7 Pc = 8 + 28 + 28 Pc = 64 [cm²]