Break the shape up into 5 different shapes:
Top rectangle: 6 x 7 = 42
Top triangle: 1/2 x 6 x 5 = 15
Bottom rectangle: 7 x 3 = 21
Bottom left triangle: 1/2 x 1 x 3 = 1.5
Bottom right triangle: 1/2 x 1 x 3 = 1.5
Total = 42 + 15 + 21 + 1.5 + 1.5 = 81 square yards.