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13 inches
Multiply (the length of any side) by (the length of any side).
All four sides of a square are of equal length. To find the area, you square the length of one side. To find the length of one side from the given area, find the square root of the area. In this case, the square root of 25 is 5. Hence, the length of a side is 5 yards.
1 ft 1 inches = 13 inches so the area is 169 square inches or 169/144 = 1.17 sq ft approx.
Use the sine ratio: 13*sin 600 = 11.25833025 or 11.26 units to two decimal places. Incidentally the third side is 6.499999998 units Check using Pythagoras: 11.258330252+6.4999999982 =169 and the square root of 169 is 13 units