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The area of the square is the length multiplied by the width but as these are of equal length (call this d) then the area is given by the formula d x d = d²

If the area is 61 sq cm (written 61 cm²) then :

d² = 61, so d = √61 = 7.81 (to 2 decimal places)

The length of each side is therefore 7.81 cm

The total length of all four sides is thus 4 x 7.81 = 31.24 cm

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Q: The length of a square with an area of 61cm?
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