When you perform calculations with mixed units, you need to be consistent in your use of those units. For instance, if something is 3 feet and 3 inches long, it is better to convert to entirely feet (3.25) or to entirely inches (39) before using that measurement in a calculation.
To convert 8 feet to inches, multiply by 12 (since there are 12 inches in a foot): 8 ft × 12 in/ft = 96 inches. Therefore, 8 ft is equal to 96 inches. If you have 8 ft and 100 inches together, you add them: 96 inches + 100 inches = 196 inches.
Since there are 12 inches per foot you simply multiply feet by 12 to get inches.
Multiply by 123 = 1728 ie 1 cu ft = 1728 cu inches.
First you change cm to inches. Then you multiply that by 12.
There are 12 inches in a foot. Therefore to calculate the inches would be to multiply 12 by 5.5. 12 inches per/ft X 5.5 ft = 66 inches
You can multiply them as mixed fractions, or convert both to inches, then divide by 144 (sq in / sq ft). 9 ft = 108 in, add 7 in = 115 in. 3 ft = 36 in, add 6 in = 42 in. Multiply (115 in) x (42 in) = 4830 sq in. Divide by 144 (sq in/sq ft) = 33.541667 sq ft.
110 ft = 1320 inTo convert from feet to inches, multiply by 12.
There are 12 inches in a foot. When you multiply it converts to 39.372 inches.
Multiply by 12.
There are 504 inches in 42 feet. This can be calculated by multiplying 42 (feet) by 12 (inches in a foot).
multiply by 12 in/ft
You multiply the ft. measurement by 12.
To convert 8 feet to inches, multiply by 12 (since there are 12 inches in a foot): 8 ft × 12 in/ft = 96 inches. Therefore, 8 ft is equal to 96 inches. If you have 8 ft and 100 inches together, you add them: 96 inches + 100 inches = 196 inches.
Multiply it by 12 and so 53.7 feet is 644.4 inches
Since there are 12 inches per foot you simply multiply feet by 12 to get inches.
Multiply it by 12 - giving the answer 324 inches !
Multiply by 123 = 1728 ie 1 cu ft = 1728 cu inches.