To calculate the area of a rectangle or square, multiply side x side. So to get the square feet in a banner 5 ft by 8 ft, you would multiply 5 x 8, which is 40 square feet.
16-ft x 70-ft = 1,120 square feet
100 feet x 100 feet = 10,000 square feet.
30 feet x 30 feet = 900 square feet.
50*50 = 2500 square feet
17 * (13 sq ft) = 221 sq ft
180 square feet.
414 square feet
1000 square feet
Multiply the two dimensions to get the area. The calculation will give you 1,250 square feet.
600 square feet.
2,400 square feet.
12x24=288 square feet.
300 square feet
1344 square feet.
not square feet but 800 cubic feet
8-ft x 4-ft = 32 square feet
3 feet x 531 feet = 1593 square feet.