1. There is a cuboid water tank without cover, 45 cm long, 30 cm wide and 24 cm high. How many square meters of iron sheet does it need to make this water tank? 2. The area of a living room is 48 square meters. It is paved with 8 decimeters long, 6 decimeters wide and 0.1 decimeters thick wooden boards. How many wooden boards do you need at least? What's the formula

1. There is a cuboid water tank without cover, 45 cm long, 30 cm wide and 24 cm high. How many square meters of iron sheet does it need to make this water tank? 2. The area of a living room is 48 square meters. It is paved with 8 decimeters long, 6 decimeters wide and 0.1 decimeters thick wooden boards. How many wooden boards do you need at least? What's the formula

1. Bottom area: 45 * 30 = 1350 square centimeter
Side area: 2 * (45 + 30) * 24 = 3600 square centimeter
Total: 1350 + 3600 = 4950 square centimeters
2,48 / (0.8 * 0.6) = 100 pieces

Fill in the numbers 1,3,2,6,4, (), ()

10 7

Fill in: 1.2; 1.1; 2.3; 3.4___ ;___ ;___ .

5.7 9.1 14.8 the sum of two numbers equals the third number, and so on

Find the law, 1,2,6,16,44120

328 add the first two terms and multiply by two