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8 × 4cm + 4 × 8cm = 32cm + 32cm = 64cm
pole powierzchni
Pp = 4cm × 4cm = 16cm²
Pś = 4cm × 8cm = 32cm²
Pc = 2×Pp + 4×Pś
Pc = 2×16cm² + 4×32cm² = 32cm² + 128cm² = 160cm²
odp. Suma krawedzi wynosi 64cm, a pole powierzchni 160cm²
Sk = 32 + 32
Sk = 64 cm
Pc = 2 × 4 × 4 + ( 4 × 4) × 8
Pc = 32 + 128
Pc = 160 cm ²