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29 June, 08:07

Find the arc length of a central angle of 90° in a circle whose radius is 4 inches.

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  1. 29 June, 08:28
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    arc length = circumference • [central angle (degrees) : 360]

    circumference = 2 * PI * radius

    25.133

    arc length = 25.133 • [90 (degrees) : 360]

    arc length = 6.283 inches
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