Question 979109
The ratio of lines on drawing to 
real lengths in feet is:
{{{ 1 / 25 }}} in/ft
The ratio of square on the drawing
to real squares is:
{{{ 1^2 / 25^2 = 1/625 }}}
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How many square inches on the 
diagram represent 1 square foot? 
{{{ 1/625 = a/1 }}}
{{{ a = 1/625 }}} square inches represent 
{{{ 1 }}} square ft