Answer
$2 \sqrt 6$ inches
Work Step by Step
Area = $length^{2}$
The area is 24 $in^{2}$ to get one side length we take the square root of 24
$\sqrt 24$
The two factors of 24 are 4 x 6
$\sqrt (4 \times 6)$
The square root of 4 is 2 because 2 x 2 = 4
$2 \sqrt 6$
Therefore the side length is $2 \sqrt 6$ inches
