The first clothing factory: 35×66=23 10

Second Clothing Factory: 35×50= 1750

(2) Set up six (1) classes with an average grade of X.

52x+48(x+5)=(52+48)*82.5

X=80. 1 point

X+5=85. 1。

The average score of class six (1) is 80. 1, and the average score of class six (2) is 85. 1.

(3) The radius r of the cylinder is 2r high.

3. 14 * r * r *(2r)= 25. 12 * 2

r^3=8

R=2 cm

The surface area of each semicylinder is

3.14 * 2 * 4+4 * 4 = 41.12 cm2

(4)( 1 1/30- 1/20*6)/(8-6)= 1/30

1/20- 1/30= 1/60

11/30 = 30 (days)

11/60 = 60 (days)

(5) 6 * 8/2-3 = 2 1 (square centimeter)

6 * 8-2 1 = 27 (square centimeter)