Discussion
The numerical values of perimeter and area of a square are equal. The length of the side of the square is :
Answer: B
The side is 4 units.
For a square of side \(s\), perimeter is \(4s\) and area is \(s^{2}\). Setting them equal:
\[ \begin{aligned} s^{2} &= 4s \\ s &= 4 \quad (s \neq 0) \end{aligned} \]
Check: perimeter \(= 16\) and area \(= 16\). With side 2 the perimeter is 8 but the area 4; with side 8 the perimeter is 32 but the area 64; with side 1 the perimeter is 4 but the area 1. So only 4 units works.
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