A circle has a central angle measuring 90° that intersects an arc of length 117.75 in. What is the length of the radius of the c
ircle?
1 answer:
<span>arc length = 2 * radius * PI * [central angle (degrees) ÷ 360]
</span>
radius = arc length / 2 * PI * .25
radius =117.75 / .5 * PI
radius =
<span>
<span>
<span>
74.9619781963 inches</span></span></span>
Source:
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http://www.1728.org/radians.htm
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