Posted by Anonymous on .
An advertisement for LED HDTVs lists the following prices for their different sizes (all have the same aspect ratio 9:16):
22inch $ 247.99
42inch $ 1,299.99
46inch $ 1,449.99
52inch $ 1,799.99
55inch $ 1,999.0
Rearrange this list in terms of the price per viewable image area ( $/in2 )

Math 209 
PsyDAG,
The inch measure is the diagonal distance across the screen. Since the ratios are all the same, you do not need to use in^2 = inches squared.
Just divide price by inches and arrange in order of value.