The area of the resulting two dimensional cross section is 15 cm²
What is a right rectangular pyramid?
A right rectangular pyramid is a pyramid, with four slant sides, and a rectagular base, such that all the sides are congruent and the vertex is atop of the midpoint of the base rectangle.
For this case, we're specified that:
The right rectagular pyramid is sliced.
The parts of the rectangle that slices it is smaller than the base rectangle obviously because unless if pyramid is sliced horizontally, parallel to the base, then the rectangle cross section must be between the base and the top of the pyramid, thus, making the cross section smaller than the base rectangle.
The cross section rectangle,(referred as smaller rectangle in question) has sides of 5 cm by 3 cm.
That makes the area of the cross section = 5 × 3 = 15 cm²
Thus, the area of the resulting two dimensional cross section is 15 cm²
Learn more about the area of a cross section here:
https://brainly.com/question/3184863
