Rhea has two cardboard boxes in the shape of rectangular prisms. each box has the same height and cross-sectional area as the other. which of the following best describes the relationship between the boxes according to cavalieri's principle?
a. the boxes are congruent.
b. the surface areas of the boxes are the same.
c. the base of each box has the same perimeter as the other.
d. the volumes of the boxes are the same.