Question 423940
Start with:
P = 2(L+W) Substitute P = 126, L = 6W
126 = 2(6W+W) Simplify.
63 = 7W Divide by 7.
9 = W and L = 6(9) = 54.
Area:
A = L*W
A = 54*9
A = 486 sq.ft.