Bonjour,
A) 4/3 × π × 2,88³ ≅ 100
B) (86 + 114) ÷ 2 = 100
C) 6³ - 2⁴ = 200
D) Pythagore : √(7,5²-7,2²) = 2,1 ≅ 2
E) 1/3 × ((5-8)²-2×3) = 1
F) 375 × 40/100 = 150
G) 12/18 - 4/24 = 4/6 - 1/6 = 3/6 = 1/2
H) Thalès : AC/30 = 12/18 ⇒ AC = 30 × 12/18 = 20
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Bonjour,
A) 4/3 × π × 2,88³ ≅ 100
B) (86 + 114) ÷ 2 = 100
C) 6³ - 2⁴ = 200
D) Pythagore : √(7,5²-7,2²) = 2,1 ≅ 2
E) 1/3 × ((5-8)²-2×3) = 1
F) 375 × 40/100 = 150
G) 12/18 - 4/24 = 4/6 - 1/6 = 3/6 = 1/2
H) Thalès : AC/30 = 12/18 ⇒ AC = 30 × 12/18 = 20