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200 cm

40 cm. 80 cm. 200 cm. V 1 = 200 × 80 × 40. V 1 = 640 000 cm 3. V 1 = 0,64 m 3. 30 cm. 50 cm. 40 cm. 170 cm. V 2 = 30 × 40 / 2 × 170 V 2 = 102 000 cm 3 V 2 = 0,102 m 3. Volume de mousse nécessaire à la fabrication du canapé. V = V 1 – V 2 V = 0,64 – 0,102 V = 0,538 m 3.

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200 cm

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  1. 40 cm 80 cm 200 cm V1 = 200 × 80 × 40 V1 = 640 000 cm3 V1 = 0,64 m3

  2. 30 cm 50 cm 40 cm 170 cm V2 = 30 × 40 / 2 × 170 V2 = 102 000 cm3 V2 = 0,102 m3

  3. Volume de mousse nécessaire à la fabrication du canapé V = V1 – V2 V = 0,64 – 0,102 V = 0,538 m3

  4. Dimensions réelles (cm) 30 40 50 80 170 200 Dimensions schéma (cm) 1,5 2 2,5 4 8,5 10 Tableau de conversion des dimensions

  5. 1 1 2 2 3 Accoudoirs et extérieur du canapé 40 cm 40 cm 50 cm 170 cm 80 cm 200 cm

  6. 4 5 5 6 30 cm Intérieur de l’assise 170 cm 30 cm 40 cm

  7. Aire de la surface de cuir nécessaire A = 2A1 + 2A2 + A3 + A4 + 2A5 + A6 A = 2×40×200 + 2×40×80 + 80×200 - 50×170 + 30×170 + 2×30×40:2 + 40×170 A = 16 000 + 6 400 + 7 500 + 5 100 + 1 200 + 6 800 A = 43 000 cm2 = 4,3 m2

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