As shown in Figure 1, a rectangular bar runs from the left side of the square to the right side, and runs 2 cm per second. As shown in Figure 2, the total score relationship of the overlapping area with the square is shown. ① after running for 4 seconds, the overlapping area is______ What is the side length of a square______ (3) complete the diagram of overlapping area between square and square in Figure 2. (4) the maximum overlapping area is______ When a rectangle leaves a square, it uses______ Seconds

As shown in Figure 1, a rectangular bar runs from the left side of the square to the right side, and runs 2 cm per second. As shown in Figure 2, the total score relationship of the overlapping area with the square is shown. ① after running for 4 seconds, the overlapping area is______ What is the side length of a square______ (3) complete the diagram of overlapping area between square and square in Figure 2. (4) the maximum overlapping area is______ When a rectangle leaves a square, it uses______ Seconds

① The length of the rectangle is 2 × 4 = 8 (CM), the width is 3 cm, and the overlapping area is 8 × 3 = 24 (square cm); & nbsp; answer: after running for 4 seconds, the overlapping area is 24 square cm. ② the side length of the square is the length after running for 6 seconds: 6 × 2 = 12 (CM). Answer: the side length of the square is 12 cm