16.6 feet
The iPhone SE has a 4-inch screen (3.48" by 1.96").
2.77 square feet.
2 feet and 2 inches.
There are 12 inches in a foot and .083 feet in a inch
5.3 cubic feet.
The Samsung has a 4.8 inch screen.
0.62 feet. In one feet there is 12 inch. When inch is given and you'll divide the given inch from 12 and you'll get feet.
5.74 feet.
2.25 square feet.
2.78 square feet.
20 feet, 1 inch
There are many merchants that offer free shipping on projection screens. The Projector Screen store (www.projectorscreenstore.com) and amazon are among the notable merchants.