A contractor was hired to build an outdoor playpen for a small family dog. The playpen should be square and should have a total area of 200 square feet. How long should the individual sides of the playpen be? (Recall that the area of a square is calculated by 2003-04-02-00-00_files/i0150000.jpg, where l is the length of one side.)
A square has four equal sides, so we can write the area of a square as [tex]A=s[/tex]×[tex]s[/tex] [tex]A= s^{2} [/tex] [tex]200= s^{2} [/tex] [tex]s= \sqrt{200}=10 \sqrt{2}=14.14 [/tex] rounded to 2 dp
