Asked by diana
                A certain Circle of paper  has x degrees cut out of it. The two cut edges are taped together, curling the paper up into a right circular cylinder of height 8 and with a base of radius 6. What is the value of x?
A) 74
B) 90
C) 120
D )144
E) 200
            
        A) 74
B) 90
C) 120
D )144
E) 200
Answers
                    Answered by
            Steve 2.0
            
    The slant height of the cone is the original radius of the paper circle.
So, r = 10
The new circumference of the base is .6 of that, so 40% of the circle was lost. 40% of 360° is 144°.
    
So, r = 10
The new circumference of the base is .6 of that, so 40% of the circle was lost. 40% of 360° is 144°.
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