Question 244712
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Area, whether the area of a plane surface or the surface area (lateral or otherwise) of a solid is always measured in square units.


Think about it like this:  To find the area of a rectangle you multiply some amount of a linear unit by some other amount of the same linear unit.  Unit times Unit equals Unit squared -- just like anything else you multiply by itself.


This makes sense when you move up to calculating volume.  The volume of a rectangular solid is length times width times height -- unit times unit times unit = unit cubed.


Learn to treat your units exactly like they were just extra variables in your expressions.  This will serve you in good stead when you do conversions, like from miles per hour to meters per second.  mi/hr x hr/min x min/sec x m/mi -- the miles, hours, and minutes all cancel and you are left with meters/second. This practice will also help in both chemistry and physics.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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