8*10*5 = 400 inches cubed (...square inches are when the object has two dimensions, and inches cubed when the object has three dimensions...)
400
4 feet is equal to 48 inches and 6 feet is equal to 72 inches. A rectangle which measured 4 feet by 6 feet would have an area of 3456 square inches.
5 feet and 8 1/2 inches.
Many possibilities exist: for example 32 ft x 10 ft.
5' 8" is equal to 1.73 meters OR 173 centimeters.
(18 feet 8 inches) - (9 feet 3 inches) equals 9.41666667 feet (9 feet 5 inches).
20.7 square feet.
First, get them into the same units: 60 inches = 5 feet. 5 feet x 8 feet = 40 square feet.
12 inches = 1 foot 60 inches = (60 / 12) = 5 ft 96 inches = (96 / 12) = 8 ft (5 ft x 8 ft) = 40 square feet
.333 square feet
8 square feet.
5 feet 8 inches = 1.7272metres (straight line) 5 feet = 1.5240 metres 8 feet = 2.4384 metres 5 feet x 8 feet = 3.7161 square metres (area)
(8 feet 0 inches) minus (2 feet 5 inches) = 5 feet 7 inches.
1 square foot = 144 square inches8 x 144 = 1,152 square inches in 8 square feet
9 feet 3/8 inches - 8 feet 2 5/8 inches = 9.75 inches.
342 x 171 = 58424. 58242 / 144 = 406.125 square feet.
137.8 square feet.
Zero - 7 feet 8 inches is a linear measurement (length of a line), while square meters are used to measure area (like, uh, squares). If you mean 7 square feet, 8 square inches, you can estimate this fairly easily - one meter is about 3.3 feet, so one square meter is about 3.3 * 3.3 = 10.89 square feet. So 7 square feet, 8 square inches (using a square inch = 1/144 of a square foot) would be 7 + 8/144 square feet, or 7.056 square feet. Divide this by 10.89 square feet per meter, and you get 7.056 / 10.89 = about 0.65 square meters. If you mean a square that's 7 feet 8 inches by 7 feet 8 inches, on the other hand, that's about 58.83 square feet, or about 5.4 square meters.