8、(8+6)*2*3- 1 1.4*4

9. Yellow paint: (40*55+40*65+40*40)*2

Red paint: 40*40*4+55*40

10, not equal. Because the sum of the total surface areas of two cubes is 4*4*2=32 square centimeters more than that of a cuboid.

1 1, 1 uncolored; Six were painted on one side; Both sides are painted with12; There are eight paintings on three sides. Look at each side of the cube carefully and you can calculate the result.