Resposta :
A = πr²α/360
A = π3².60/360
A = π.9/6
A = 3π/2 cm²
ou
π ~ 3,14
A ~ 3 . 3,14/2
A ~ 3 . 1,57
A ~ 4,71 cm²
A = π3².60/360
A = π.9/6
A = 3π/2 cm²
ou
π ~ 3,14
A ~ 3 . 3,14/2
A ~ 3 . 1,57
A ~ 4,71 cm²