Five identical small squares are put together into a rectangle with a circumference reduced by 24 cm. The area of each small square is______ Square centimeter

Five identical small squares are put together into a rectangle with a circumference reduced by 24 cm. The area of each small square is______ Square centimeter

The side length of a small square is: 24 △ 8 = 3 (CM), the area is: 3 × 3 = 9 (square cm). Answer: the area of a small square is 9 square cm

How many different spellings are there to use a square cloth with an area of 1 square meter to make a rectangle with an area of 30 square meters? If you want to pin lace around a rectangle, which spelling is the most economical?

According to the analysis, the area of the assembled figure remains unchanged, and the length and width of the assembled rectangle can be divided into the following situations: (1) 30 meters long, 1 meter wide, perimeter: (30 + 1) × 2 = 62 (meters); (2) 15 meters long, 2 meters wide, perimeter: (15 + 2) × 2 = 34 (meters); (3) 10 meters long, 3 meters wide, perimeter: (10 + 3)

How many decimeters of lace do you need to sew around a 9 decimeter square tablecloth?

9 * 4 = 36 decimeters

There is a square tablecloth with a side length of 8 decimeters. If you want to sew lace around it, please calculate how long it will take

8 × 4 = 32 (decimeter)