Correct option is A
Area of a rectangle = length x breadth
Given information: The square and the rectangle have the same area. The length of the rectangle is 16 cm.
Area of rectangle = Area of square 16 cm x breadth = 64 sq cm
breadth = 64 sq cm / 16 cm = 4 cm
Therefore, the breadth of the rectangle is 4 cm. The answer is (a).