Question

calcule a area do setor circular AÔB contido cujo o raio mede 6 cm,sabendo que o angulo central AÔB mede 120º

Answer 1

Olá Maria

As = πr² * (α/360)

As = 6²*π * (120/360) = 36π/3 = 12π cm²

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Answer 2

Asetor = α.R²/2 

Asetor = [2π/3 . 6² ]/2

Asetor = [24π] / 2

Asetor = 12π cm²

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14/10/2016
Sepauto 
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