Question 41495
Area can be solve by using this formula.

Let A = area of the triangle
    x = be the included angle
    a = sides of the triangle
    ^n means raised to the power of 'n' 


    A = a^2/2 sin x (area for the triangle with the given two sides and an included angle)
      = [(20^2)/2] sin 38 deg.
    A = 123.132 sq. ft. ---ans