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MAA AMC
AMC 12/AHSME
1986 AMC 12/AHSME
18
18
Part of
1986 AMC 12/AHSME
Problems
(1)
A slice of geometry
Source: AHSME 1986 problem 18
10/1/2011
A plane intersects a right circular cylinder of radius
1
1
1
forming an ellipse. If the major axis of the ellipse of
50
%
50\%
50%
longer than the minor axis, the length of the major axis is
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<span class='latex-bold'>(A)</span>\ 1\qquad<span class='latex-bold'>(B)</span>\ \frac{3}{2}\qquad<span class='latex-bold'>(C)</span>\ 2\qquad<span class='latex-bold'>(D)</span>\ \frac{9}{4}\qquad<span class='latex-bold'>(E)</span>\ 3
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3
geometry
conics
ellipse
AMC