a. itcan be represented as 4 triangles and a rectangle
2 triangles 7 yards by 10 yards
2 triangles 6 yards by 7.5
1 rectangle 6 by 20 yards
b 2 triangles 7 yards by 10 yards = 2 (0.5 x 7 x 10) = 70 yard^2
2 triangles 6 yards by 7.5 = 2 (0.5 x 6 x 7.5) = 45 yard^2
1 rectangle 6 by 20 yards = 120 yard^2
Area = 70 +45+120 = 235 yard^2