Traditional Culture Encyclopedia - Photography and portraiture - When the length of a cuboid is increased by 2 cm, it becomes a cube, and its volume is increased by 50 cubic cm. At this time, the volume of this cube is () cubic centimeters?

When the length of a cuboid is increased by 2 cm, it becomes a cube, and its volume is increased by 50 cubic cm. At this time, the volume of this cube is () cubic centimeters?

When the length of a cuboid is increased by 2 cm, it becomes a cube, and its volume is increased by 50 cubic cm. What is the volume of this cube at this time (√50÷2)? = 125) cubic centimeter?

2. The school needs to paint the classroom. It is estimated that * * * needs 224 kilograms of paint and 35 kilograms of paint per barrel. At least (224÷35=7) barrels should be bought.

3, 3 minutes to process 15 parts, 2 parts need (2/5) minutes, 2 minutes to process (10) parts.

4. The photography team took photos for the first batch of students. The cost of three photos of a negative is 2.70 yuan, and the cost of printing one photo is 0.40 yuan. The first team has 15 students. If every student has a photo, then every student has to deal with (2.7+4.8)÷ 15=0.5 yuan.

5. There are 100 balls in the pocket, including 42 red balls, 20 green balls, 20 white balls 14 and 9 black balls. The possibility of taking out the white ball (14%) and the possibility of taking out the black ball (9%).