You have to multiply the two dimensions to get the area. In this case the answer will be 293.8 square feet.
13 ft x 13 ft = 169 ft2
12x24=288 square feet.
48 square feet (6x8=48)
10 ft * 11 ft = 10*11 = 110 square feet.
144
13 ft * 13 ft = 169 sq ft.
13 ft * 90 ft = 13*90 sq feet = 1170 sq feet.
26-ft x 13-ft = 338 square feet.
13 ft = 4.33 yards
17 * (13 sq ft) = 221 sq ft
13 ft x 22 ft = 286 square feet
14 ft x 13 ft = 182 sq ft
195
13*14 is 182 sq. ft.
16 ft * 13 ft = 208 sq ft = 19.32 sq metres.
2 ft * 13ft * 5 in = 2 ft * 13 ft * 5/12 ft =2*13*5/12 cubic ft = 10.833... cu ft
12 ft * 13 ft = 156 sq feet = 14.49 sq metres.