A Canvas Camping Tent Is to Be Constructed in the Shape

Multiple Choice

A canvas camping tent is to be constructed in the shape of a pyramid with a square base. An 8-foot pole will form the center support, as illustrated in the figure. Find the length x of a side of the base so that the total amount of canvas needed for the sides and bottom is 384 ft ² .

A) 13 ft
B) 10 ft
C) 12 ft
D) 11 ft
E) 14 ft