I have a sheet of paper with a grid drawn on it, filling the whole paper. This grid has 4 rows and 9 columns, forming 36 congruent rectangles. Also, each of these rectangles is similar in proportion to the whole sheet.

If the sheet is 15 inches wide, how long is it?

All one needs to do is use proportions:
Let y stand for how long the sheet is, then:
(y/9)=(15/4)
(9*15)/4=y=33.75
The sheet is 33.75" x 15"

Posted by logischer Verstand on 2004-03-22 18:44:36