Question 1
In this paper, let $[x]$ denote the greatest integer not exceeding x. For examples, $[5]=5$, $[2.8]=2$, and $[-2.3]=-3$.
The perimeter of a triangle ABC is 48. The point D is the midpoint of AB such that DC=DA=10. Find the area of triangle CBD.
The perimeter of a triangle ABC is 48. The point D is the midpoint of AB such that DC=DA=10. Find the area of triangle CBD.