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

**Answer Choices**

A. 500\:cm^2

B. 300\:cm^2

C. 60\:cm^2

D. 150\:cm^2

E. 250\:cm^2

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

**Answer Choices**

A. 500\:cm^2

B. 300\:cm^2

C. 60\:cm^2

D. 150\:cm^2

E. 250\:cm^2