1. A rectangular water tank, viewed from the inside, is 8 decimeters long, 8 decimeters wide, 4 decimeters high and 3 decimeters deep. Put a 2-meter-long square iron block in it. What is the depth of the sink at this time? 2. Zhangzhuang Village harvests wheat with a wheat harvester. On the first day, it harvested two-ninth of the wheat in the village. On the second day, it harvested three-eighth of the wheat in the village, and the rest was harvested on the third day. What's the least you get in these three days? 3. Both Party A and Party B run from the starting point to the finish line at the same time. When Party A reaches the finish line10m, Party B reaches 9m. Now let Party A retreat to the starting line 1 m, and Party B is still at the starting line. Can they reach the finish line at the same time? 4. The number of boys and girls in a primary school is 1250, and the number of boys is 1.25 times that of girls. How many girls are there? The 40 math textbooks in the class are stacked together, which is exactly a cuboid with a volume of 9600cm cubic. How many centimeters thick is each math textbook? 6. A cuboid water tank, with a watermelon in it, has a water depth of 2.5 decimeters. When the watermelon is taken out, the water depth becomes 2 decimeters. What is the volume of watermelon? The water tank is 6 cm long and 4 cm wide. The capacity of the rectangular water tank is 560 ml. The bottom of this cylinder is a square with a side length of 8 cm. What is the height of the water tank? Lingling has some rectangular pieces of paper. The length of the rectangle is 12 cm and the width is 8 cm. How long are the sides of this square to form a big square? How many rectangular sheets of paper do you need at least? 9. The area of a rectangle is 35 square centimeters. If the length and width of a rectangle are whole centimeters, what is the circumference of the rectangle? 10. The surface area is 96 square centimeters and the volume is (? ) cubic centimeter 1 1. Below is an enlarged view of a rectangular carton. How many square centimeters of cardboard does it take to make this carton? What is the volume of this carton in cubic centimeters? (

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