<PRE><B>Question 1012128</B>
sqrt(529) = 23


23^2 = 23*23 = 23 * (20 + 3) = 20*23 + 3*23 = 460 + 69 = 529.


easiest way is to use your calculator.


manually,  you might do something like the following:


20*20 = 400 = too small
25 * 25 = 625 = too big
22 * 22 = 484 = too small
24 * 24 = 576 = too big
23 * 23 = 529 = just right.


using your calculator you would just find sqrt(529) = 23.


alternatively, 529^(1/2) = 23.


each side measures 23 feet.




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