At the beginning of each month a Math challenge will come out.
To solve the challenge correctly, you have to:
- Write the solution with an explanation on a paper with your name and group and left it in the mailbox situated in the hall, before the first day of the following month.
- Write the reasoned solution in this website (at the bottom of the article).
There will be 3 categories:
- Pupils (ESO, Batxillerat and Professional Studies).
- Teachers and PAS.
- Web visitors.
October
We have a triangle with sides 15, 20 and 25 cm. We cut the vertices to 5 cm so that an
irregular hexagon is formed. Calculate the area of this hexagon.
