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Sagot :

Bonsoir,

Ex. 2 :

Aire = 280 × 95 + π × (280÷2)² ≅ 88 175 cm²

Ex. 3 :

V = (99 × 114) ÷ 2 × 198

  = 1 117 314 cm³

  = 1 117,314 dm³

  ≅ 1 117 dm³

IRIS07SARAH
A=280*95+3,14*(280:2)^2=88 175 cm2
V=(99*114):2*198 =1 117 314 cm3

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