Four similar glass tumblers just fit into a cubical box.The area of the top of the circular cover of any one of the tumblers is 4 pi.The area of each side of the box is

a. 16
b. 32
c. 32 pi
d. 64
e. 64 pi

please answer and explain

given the area, the radius is 2.

So, the diameter is 4.

Two glasses side by side have width 8.
So, the box is 8x8x8.
The area of a face is 64.