选择题
2009 AMC 8 Problem 7: Triangular Road Plot
The triangular plot ACD lies between Aspen Road, Brown Road and a railroad. Main Street runs east and west, and the railroad runs north and south. The numbers in the diagram indicate distances in miles. The width of the railroad track can be ignored. How many square miles are in the plot of land ACD?
A.
2
B.
3
C.
4.5
D.
6
E.
9