To find the square root of 28 you must identify the two perfect squares closest to the square root of 28, which are 25 and 36. I had to figure out what number was in the center of 25 and 36, it happened to be 31. Next I have to find out what 28 is closest to, 25, 31, or 36. But it is directly in the middle of 25 and 31. Finally I had to figure out what can multiply itself to get 28. I counted and it is 5.3.