Perimeter is adding all of the sides
length is 3 times width
l = 3w
The formula for perimeter for a rectangle is 2l + 2w = P
2(3w) + 2w = 16
6w + 2w = 16
8w = 16
w = 2
l = 3w
l = 3(2)
l = 6
Area is length times width
(l)(w)=A
(6)(2)=A
12=A
The area of the sign is 12 inches squared or 12 in²
