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25 March, 18:15

The area of a circle is 78.5 square centimeters, and a subtending arc on the circle has an arc length of 6 pie. The estimated value of is pie 3.14. The measure of the angle subtended by the arc is °.

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  1. 25 March, 20:41
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    Area = PI * radius^2

    radius = 78.5 / 3.14

    radius = 25

    circumference = 2 * PI * r

    circumference = 157.08

    arc length = 6*PI = 18.85

    arc length / circumference = 18.85 / 157.08 = 0.1200025465

    central angle = 0.1200025465 * 360 = 43.2 degrees
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