1089 square cms is equal to 168.7 inches
12.99 x 7.087
16" x 16" = 256 square inches.
Using an aproximation of 2.2cm per 1 inch the calculation goes as follows: (40 * 33 * 18) / (2.2 ^ 3) ~ 2028.55 cubic inches.
19.69 x 15.75 x 7.874 inches
8 x 12 inches = 96 inches
23" x 60" = 1,380 inches. 1,380 inches = 115 feet
7.8 x 12 = 93.6 inches
12 in x 9 in = (12 x 9)(in x in) = 108 in^2
It equals 3.93inches x 4.92inches
1728 cubic inches Since 1 cubic feet equals 1ft x 1ft x 1ft then 1 cubic feet also equals 12in x 12in x 12in which equals 1728 cubic inches.
40 x 14 = 560 square inches
20 x 36 = 720 inches