2. Xiaohua starts from 0. If Xiaohua started at 0: 00 and traveled eastward for 5 meters, that is, +5 meters, then Xiaohua is now at -8 meters, that is to say, he is heading for _ _ _ _ _ _ _ _. If Xiaohua starts from 0: 00 and travels 5 meters to the east and 8 meters to the west, then Xiaohua's position is at _ _ _ _ meters.
3. If 3x=4y, then x: y =:.
4. On a precision part drawing (scale is 5∶ 1), the measured part length is 40mm, but actually 2mm.
5. One side of the cylinder is unfolded into a rectangle. The length of the rectangle is 9.42 cm and the width is 3 cm. The side area of this cylinder is square centimeters and the surface area is square centimeters.
6. There is a cylinder with a bottom radius of 2 cm and a height of 5 cm. Its side area is square centimeters and its surface area is square centimeters.
7. The distance between Party A and Party B is 65,438+000 km, and the distance between the two places is 65,438+00 cm measured on the map. The scale of this map is that if the distance between Party A and Party B measured on the map is 20 cm, then the actual distance between Party A and Party B is kilometers.