What is the area of a cross section that is parallel to face bfgc ?

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cm²
a rectangular prism containing dashed lines representing the hidden edges. the face nearest the viewer is a rectangle labeled a b c d with side a d labeled six centimeters and side d c labeled twelve centimeters. the face furthest from the viewer is labeled e f g h. side c g is labeled thirty-six centimeters. the length of the prism is thirty-six centimeters, the width is twelve centimeters, and the height is six centimeters.