2) http://web2.0calc.com/questions/1-propztest-prop-2-z-2-25-p-0-01222244334-p-hat-125-n-144
6) http://web2.0calc.com/questions/what-is-the-volume-of-a-cylinder-with-a-radius-of-5cm-and-a-height-of-10cm
7) http://web2.0calc.com/questions/f-x-2x-15-solve-using-real-line
8) http://web2.0calc.com/questions/the-patio-is-2-8m-long-and-3-2m-wide-some-tiles-may-have-to-be-cut-to-fit-the-patio-which-of-the-tiles-are-the-leat-expensive-please-comm
Older unanswered ones
http://web2.0calc.com/questions/unanswered-questions-1-12-14
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