The length is 8mm
you find the square root of 64mm and your answer will be 8mm
Just a clarification in terms of notation and units...
64mm is a measure of length, not area. The proper designation is 64 mm2 or 64 square mm.
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The area of a square of length m is m2 Accordingly, for a square of side length 6 length units = 62 square units. = 36 square units
length x length = area length = square root of 441= 21 inches
A square with a side length of 12 yards has an area of 144 square yards.
A square with a side length of 16 inches has an area of 256 square inches.
The side length of a square if it has an area of 300 square inches is: 17.32 inches.