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A cone has a lateral surface area of 540pi and a slant height of 36.  Unrolling the curved surface gives a circular sector with center angle n degrees. Find n.

 Nov 15, 2020
 #1
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Unrolled, the radius of the area of the circle is 36

 

total circle = pi 362

                                     540pi / pi 362     * 360o = 150o

 Nov 15, 2020
 #2
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Good job, Guest!

ETERNITY  Nov 15, 2020

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