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A sector with a central angle measure of 200 degrees has a radius of 9cm

B) $$45\pi cm^{2}$$
$$A=\frac{\pi r^{2}(central. Angle) }{360} =\frac{\pi (9)^{2}(200) }{360} =\frac{\pi (81)(200)}{360}=45\pi cm^{2}$$