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1950 AHSME Problems/Problem 34

Revision as of 12:41, 18 January 2012 by Mrdavid445 (talk | contribs) (Created page with "==Problem== When the circumference of a toy balloon is increased from <math>20</math> inches to <math>25</math> inches, the radius is increased by: <math>\textbf{(A)}\ 5\text{ ...")
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Problem

When the circumference of a toy balloon is increased from $20$ inches to $25$ inches, the radius is increased by:

$\textbf{(A)}\ 5\text{ in} \qquad \textbf{(B)}\ 2\dfrac{1}{2}\text{ in} \qquad \textbf{(C)}\ \dfrac{5}{\pi}\text{ in} \qquad \textbf{(D)}\ \dfrac{5}{2\pi}\text{ in} \qquad \textbf{(E)}\ \dfrac{\pi}{5}\text{ in}$

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