None.
16 feet is a measure of length or distance while you are looking for a measure of area. The two are entirely different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.
16 x 13 feet has an area of 208 square feet.
16 feet? or 16 * 3.14 (pie) = 50.24 feet but whats the depth?
192 square feet (12 x 16 = 192).
The area is 16 times 11 = 176 square feet
16 feet
16' x 16' x 0.5' = 128 cubic feet
It would depend on what type of plants you were planting. You could plant 65 grape hyacinth bulbs in 16 (square?) feet of garden space. You wouldn't be able to plant 65 azalea bushes in the same area.
Perimeter = 12+12+16+16 = 56 feet Area = 12*16 = 192 square feet
The area is 50.27 square feet.
The area of a parallelogram with a height of 5 feet and a base of 16 feet is 80 square feet.
area = length x width width = area/length 16/8 = 2 feet
160 square feet