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A = πr2 5 cm A = π × 2 A = πr2 8 cm radius = A = π × 2 A = πr2 6.5 cm A = π × 2 A = πr2 25 cm radius = A = π × 2 A = πr2 A = × π × 2 radius = 360 A = πr2 9 cm A = × π × 2 radius = 360 A = πr2 60 o 12 cm A = × π × 2 radius = 360 A = πr2 10 cm 4 cm radius = Rectangle Semi-circle A1 = 10 × A2 = × π × 2 360 |