Question

In equilateral ΔABC, AD, BE, and CF are medians. If AC = 22, then BD

Answer 1

11.

Explanation:

Basically without calculus we have the answer. As ABC is a equilateral triangle we have that then medians cut each side at the half. So, as you can see in the picture, BD=x is a half of BC and ABC is equilateral so BC=AC=22. Then, BD=22/2=11.