As shown in the figure, three rectangles of the same size just make a square. The perimeter of the square is 48 cm. Find the perimeter of each rectangle In the following figure, three rectangles are stacked horizontally
48 △ 4 = 12 (CM) 12 cm is the side length of a square, which is the length of the original rectangle
12 △ 3 = 4 (CM) 4cm is the width of a rectangle, because three rectangles together are equal to a square, that is, three widths are equal to one length
So the circumference of rectangle = (12 + 4) × 2
=16×2
=32 (CM)