Respuesta :
The shape of the cross-section parallel to the base of the box is rectangle
How to determine the shape?
The dimensions of the box is given as:
7 ¾ inches by 12 ¼ inches by 3 ¼ inches
The dimensions are not equal.
This means that the box is a rectangular prism
The cross-section of a rectangular prism is a rectangle
Hence, the shape of the cross-section parallel to the base of the box is rectangle
Read more about cross-section at:
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Step-by-step explanation: