GAUSS8 2005 Problem 11

Past Contests GAUSS8 2005
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1

In the diagram, AB=25\:cm,AC=20\:cm and \angle A=90^\circ. What is the area of triangle ABC?

Image

Answer Choices
A. 500\:cm^2
B. 300\:cm^2
C. 60\:cm^2
D. 150\:cm^2
E. 250\:cm^2