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.
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
Well you have to multiply 5 x 12 (12 in= 1 ft) and then add 2 in, and your total is 60 in
Multiply 42 times 12=504 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.
You multiply the ft. measurement by 12.
multiply by 12 in/ft
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.
24 inches... Multiply that by 25.4 to find it in millimetres.....