Bonjour,
aire sphère = 4 × π × rayon²
= 4 × π × (10/2)²
= 100π (cm²)
aire cube = 6 × côté²
= 6 × 10²
= 600 (cm²)
100π ÷ 600 × 100 = 52,359877559 ≅ 52,36 %
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Bonjour,
aire sphère = 4 × π × rayon²
= 4 × π × (10/2)²
= 100π (cm²)
aire cube = 6 × côté²
= 6 × 10²
= 600 (cm²)
100π ÷ 600 × 100 = 52,359877559 ≅ 52,36 %