Hello everybody, I am taking a basic undergrad General Chemistry I course and am just having a little trouble brushing myself up on dimensional analysis (or factor label). This is the problem.(adsbygoogle = window.adsbygoogle || []).push({});

The area of a telescope lens is 7903 mm^{2}. (a) What is the area in square feet? (b) If it takes a technician 45 sec to polish 135 mm^{2}, how long does it take her to polish the entire lens?

I am just not so sure how to get from millimeters squared to square feet. If anyone can help me out I'd really appreciate it. Thank you.

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# Homework Help: Dimensional Analysis of a lens

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