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AHSME 1950- the original problems

Source:

July 17, 2008
geometry

Problem Statement

If the radius of a circle is increased 100%100\%, the area is increased:
<spanclass=′latex−bold′>(A)</span> 100%<spanclass=′latex−bold′>(B)</span> 200%<spanclass=′latex−bold′>(C)</span> 300%<spanclass=′latex−bold′>(D)</span> 400%<spanclass=′latex−bold′>(E)</span> By none of these<span class='latex-bold'>(A)</span>\ 100\% \qquad <span class='latex-bold'>(B)</span>\ 200\% \qquad <span class='latex-bold'>(C)</span>\ 300\% \qquad <span class='latex-bold'>(D)</span>\ 400\% \qquad <span class='latex-bold'>(E)</span>\ \text{By none of these}
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