it would take 64pi ft. sq. or approximately 201.06 ft. sq.
the formula for the surface area of a sphere is 4pi×r sq.
filling in for the radius (r) which is 4
4×pi×4 sq.
4×pi×16
then 16×4=64
therefore being 64 pi ft. sq.
but multiplying the pi would equal approx 201.06 ft. sq.
hope this helps