Problema Solution
the plane section of ABCD shown in the figure is cut from a cube of edge a, find the area of this section if D and C are each at the midpoint of an edge.
Answer provided by our tutors
since the points C and D lie on the mid point of the edges, the section will have
both sides equal to a/2
the area of the section ABCD will become a/2*a/2=a2/4