Question

The edge of a cube is 4 inches. The area of a cross section perpendicular to one face is____ square inches, and its perimeter is____inches.

Answer 1

16 square inches and 16 inches.

Explanation:

Answer 2

Draw a sketch of a cube with side = 4 in as shown.
The shaded area is perpendicular to the right and left vertical faces of the cube, so the cross section is a square with each side equal to 4 in.

The area of the cross section is
4*4 = 16 in²

The perimeter of the cross section is
4+4+4+4 = 16 in.