Surface area of cuboid:
( 15× 10+ 15×7+ 10×7)×2。
=650 (square centimeter);
The minimum surface area of this cuboid is 650 square centimeters.
Understand the preventive measures:
In July of 20 19, China Internet Network Information Center released "Research Report on Internet Usage of Minors in China in 20 18", which showed that the number of underage netizens in China was1690,000, among which 64.2% people played games as their main recreational activities.
In 20 19, China Consumers Association experienced 50 games and found that only 4 1 games enabled the real-name registration system. Moreover, some real-name registration authentication methods exist in name only. For example, only 17 games require the user's real name when logging in, and many games do not require the user to verify or only verify the user's real name when generating consumption.