The side length of the square board would be 12.8 inches.
A square is a quadrilateral with four equal sides.
Characteristics of a square includes:
• The diagonals bisect each other at 90°.
• Opposite sides parallel and of equal length
• The four angles of a square are equal.
Area of a square = length²
To determine the side length, find the square root of the area of the board.
√164 = 12.806 inches
Approximating it to the nearest tenth is 12.8 inches
The tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero
To learn more about how to determine the side lengths of a square, check here : https://brainly.in/question/35346004?tbs_match=1&referrer=searchResults
