div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: AP Calculus AB March 13 2009 src=https:reader035fdocumentorgreader035viewer202207311755812136d8b42a65108b4fa4html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divpHappy π approximationp pDay!p pPi by flickr user jjrohalpdiv