A nice geometry trick!
![](https://i.ytimg.com/vi/RKTqKe4M5wM/mqdefault.jpg)
13:19
What is the radius of 🔴 ?
![](https://i.ytimg.com/vi/7T6eRPI77vA/mqdefault.jpg)
14:29
Find the missing radius!
![](https://i.ytimg.com/vi/stpiBy6gWOA/mqdefault.jpg)
17:13
Un avance en el uso del cuadrado mágico - Numberphile
![](https://i.ytimg.com/vi/0UN_HbOTTcI/mqdefault.jpg)
3:15:53
Música Clásica para la Concentración | Mozart, Beethoven, Vivaldi...
![](https://i.ytimg.com/vi/ke68ujLun3M/mqdefault.jpg)
15:44
Half of a deathly area...
![](https://i.ytimg.com/vi/K52nO6uNA5I/mqdefault.jpg)
21:43
El Libro RUSO Más TERRIBLE del Cálculo HUMILLA a ChatGPT (Demidovich)
![](https://i.ytimg.com/vi/_ioc6sdgugo/mqdefault.jpg)
1:19:51
J.S. Bach: The Violin Concertos
![](https://i.ytimg.com/vi/PRDVjm56Oj8/mqdefault.jpg)
9:44