Respuesta :

Meinin

Answer:

220 degree

Step-by-step explanation:

Given the radius=18cm , pi=3.14.. , area=198π

Area of a sector =∅×π×r²/360

or,198π=Θ×π×r²/360

or,Θ=360×198π/πr²

∴Θ=220°

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