Measure the length of one side of the square (s)
Use the formula for area: A = s²
Square the side length to get the area
If given the perimeter (P), use: s = P/4, then A = (P/4)²
If given the diagonal (d), use: A = d²/2
Measure the length of one side of the square (s)
Use the formula for area: A = s²
Square the side length to get the area
If given the perimeter (P), use: s = P/4, then A = (P/4)²
If given the diagonal (d), use: A = d²/2