Answer:
Rectangle B has a length of 4 inches.
Explanation:
Rectangle A has a width of 3 inches and a length of 5 inches.
Let us find its perimeter:
Perimeter = 2(L + W)
where L = length
W = width
Its perimeter is therefore:
P = 2(5 + 3)
P = 2 * 8 = 16 inches
Rectangle B has the same perimeter as Rectangle A. Let us find the length of B.
Its width is 4 inches, therefore, perimeter is:
P = 2(L + W)
16 = 2(L + 4)
16 = 2L + 8
16 - 8 = 2L
8 = 2L
=> L = 8 / 2 = 4 inches
Rectangle B has a length of 4 inches.