what is the area of the triangle? (its a scalene obtuse triangle)

height 4.5 ft
base 8.7 ft

A. 13.2 ft^2
B. 19.575 ft^2
C. 20.25 ft^2
D. 39.15 ft^2

2 answers

http://www.google.com/#q=area+of+the+triangle

I'll be glad to check your answer.
Yes, B.