One cubic inch is about 0.00001638706 cubic meters.
656.25 cubic inches is about 0.01075 cubic meters.
By "cbm" I'm assuming you mean, "cubic meters". First, you have to convert inches to meters. One inch = 0.0254 meters. So: 16 inches = 16 * 0.0254 meters 16 inches = 0.4064 meters 20 inches = 20 * 0.0254 meters 20 inches = 0.508 meters Now you use those numbers to calculate the volume of the drum in cubic meters: Volume = (pi * Radius^2) * Length (Note: ^ means to the power of) Length is 0.508 meters. Radius is 1/2 diameter, or 0.4064/2 = 0.2032. Volume = (pi * 0.2032^2) * 0.508 Volume = (3.14159 * 0.2032^2) * 0.508 Volume = (3.14159 * 0.04129) * 0.508 Volume = (0.129717) * 0.508 Volume = 0.065896 Answer: 0.065896 cubic meters or about 66/1000 of a cubic meter
Cubic meters and square meters aren't even the same kind of quantity.
Divide the number of cubic inches by (12 X 12 X 12), ie 1728.
1 cubic meter = 61,023.74 cubic inches. so multiply 8 by both sides 1 cubic meter * 8 = 61,023.74 * 8 8 cubic meters = 488, 189.92 cubic inches
784 cubic inches is 0.01285 cubic meters.
1,276 cubic inches = 0.021 cubic meters.
cubic meters x 61,023.74 = cubic inches
Cubic inches x 0.0000164 = cubic meters
The formula for cubic inches to cubic meters is: cubic inches x 0.000016387 = cubic metersUsing your example: 29,484 cubic inches x 0.000016387 = about 0.483156195 cubic meters
829,440 cubic inches is about 13.6 cubic meters.
419,328 cubic inches is 6.871 cubic meters.
656.25 cubic inches is about 0.01075 cubic meters.
471,240 cubic inches equates to about eight(7.72224004) cubic meters.
The Volume of a box = length * width * depth. eg a box 12 inches x 6 inches x 8 inches = 576 cubic inches Note the units of volume are in 'cubic' units. For example, if the sides of the box are in meters, the volume would be in cubic meters.
384 cubic inches is equivalent to 0.00629 cubic meters or 6.29 liters.
3000 cubic inches is equal to 0.049 cubic meters