The diagram shows quadrilateral mnpq.

I assume that we are to solve for the area of the figure. We can divide the given figure into two: (1) triangle in the left and (2) rectangle on the right. 
Calculating the areas:
          (2) rectangle  
                                       Area = L x W
                                      Area = (6)(3) = 18
       
           (1) triangle
                                 Area = 0.5bh
             b = 6
             Solving for height using Pythagorean theorem,
                                  h² = 10² - 6²   ; h = 8 
                Area of triangle = 0.5(6)(8) = 24
The total area is equal to,
                              Area = 24 + 18 = 42 unit squared