Answer:
72 cm^2
Explanation:
If the Length is twice the Width, then W = W and L = 2W.
The perimeter formula is P = 2W + 2L, which here is:
36 = 2W + 2(2W), or
36 = 2W + 4W = 6W; then W = 6 and L = 12.
The area formula is A = L * W, which here is:
A = 6*12 = 72 cm^2