Odpowiedź:
P = 2 * 8 cm * 3,5 cm + 2 * 8 cm * 4 cm + 2 * 3,5 cm * 4 cm =
= 2 * 28 cm² + 2 * 32 cm² + 2 * 14 cm² = 56 cm² + 64 cm² + 28 cm² =
= 148 cm²
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Odpowiedź:
P = 2 * 8 cm * 3,5 cm + 2 * 8 cm * 4 cm + 2 * 3,5 cm * 4 cm =
= 2 * 28 cm² + 2 * 32 cm² + 2 * 14 cm² = 56 cm² + 64 cm² + 28 cm² =
= 148 cm²