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Sagot :

Bonjour,

1) et 2) (32 - 2 × 9) ÷ 2 = 7 m

3) 9 × 7 = 63 m²

4) 63 × 16 € = 1 008 €

5) 2(3)(9) + 2(3)(7) + 2(9)(4)÷2= 132 m²

6) (132 - 1 × 2,5 - 1,2 × 2,4) × 30 € = 3 798,60 €

7) 3(9)(7) + (9)(4)÷2×7 = 315 m³

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