Question

A right rectangular prism has a length of 9 inches, a width of 10 inches, and a height of 11 inches. If a plane slices the prism in half, parallel to its smallest face, which of the following describes the shape of the two-dimensional cross-section?
A.
a 10-inch by 11-inch rectangle
B.
a 10-inch by 10-inch square
C.
a 9-inch by 10-inch rectangle
D.
a 9-inch by 9-inch square

Answer 1

See the picture attached to better understand the problem

we know that

the smallest face of the prism is the face ABCD
so
the shape of the two-dimensional cross-section is a rectangle 9 in x 10 in
therefore

the answer is
the option C.
a 9-inch by 10-inch rectangle