Bonsoir,
Formule: Aire disque = π x R²
Aire disque de rayon 4 cm
A = π x 4²
A = 50,26548246 m² = 50, 26
Aire disque de rayon 3 cm (diam 6cm)
A = π x 3²
A = 28.27433 = 28, 27
Aire disque de rayon 3,5 cm
A = π x 3,5²
A = 38.48451 = 38,48
Aire disque de rayon 2,75 cm
A = π x 2,75²
A = 23.75829 = 23,76
Bonne soirée.
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Bonsoir,
Formule: Aire disque = π x R²
Aire disque de rayon 4 cm
A = π x 4²
A = 50,26548246 m² = 50, 26
Aire disque de rayon 3 cm (diam 6cm)
A = π x 3²
A = 28.27433 = 28, 27
Aire disque de rayon 3,5 cm
A = π x 3,5²
A = 38.48451 = 38,48
Aire disque de rayon 2,75 cm
A = π x 2,75²
A = 23.75829 = 23,76
Bonne soirée.