2. Cylindrical, with a bottom area of 8 square centimeters and a height of 3 centimeters, changed to a conical iron block with a floor machine 12 square centimeter and a height of (6) centimeters.
3. A rectangular iron sheet with a length of 28.26CM and a width of 15.7CM and a circular iron sheet with a diameter of (9) cm can be made into a container with as large a volume as possible.
4. 12 divided by16 = (60): 80 = 2.4: (3.2) = (75)% 2 and its reciprocal ratio is (4: 1).
5. The repair is two thirds of the last repair, and the ratio of the length of the repair to the length of this road is (2:5).
6. The ratio of A.B. is 0.8, the simplest integer ratio of A.B. is (4:5), and B is (25)% more than A..
7. After the number of teams in Class A is adjusted to Class B by 1, the numbers are equal. It turns out that the ratio of the two classes is (9:7).
8. (30)1+(6)1= 51(fill in two different integers)
9. Divide the apples, with average per person 12 yuan. If you only give it to Class A 20 yuan, give it to Class B 30 yuan.
10. 1 red, 2 yellow and 3 blue, so you can touch 100 times at will, and the number of times you touch yellow accounts for (3) of the total (1).
Whew, I'm so tired!