if the area of minor sector is 392.5 sq. cm and the corresponding central anh
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Solution.
Area of sector = π(r)^2* θ/360°
=> 3.14 (r)^2 *72/360 = 392.5
=> 0.628 (r)^2 = 392.5
=> r^2 = 625
=> r = 25
so,radius = 25cm
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