A composite figure is divided into two congruent trapezoids, each with a height of 4 cm. What is the area of this composite figure?
A. 32cm
B. 40cm
C. 64cm
D. 80cm

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex