Find the areas of the shaded portions of the quilt patterns shown below if one side of each square is 6 cm. b. c. d. . 6 cm - 6 cm - 6 6 m Card trick Linoleum Chum dash Friendship Star a. For figure (a), the area of the shaded portion is (Type an integer or a simplified fraction.) b. For figure (b), the area of the shaded portion is (Type an integer or a simplified fraction.) c. For figure (c), the area of the shaded portion is (Type an integer or a simplified fraction.) d. For figure (d), the area of the shaded portion is (Type an integer or a simplified fraction.)