The area of the major sector of a circle with radius 4cm and angle 30°is _____
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area of major area of = 360-thida/360*πr^2
360-30/360*22/7*4*4
330/360*22/7*4*4
11/
360-30/360*22/7*4*4
330/360*22/7*4*4
11/
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