10 ft x 4 ft x 3 ft = 120 ft3
Any volume is measured in cubic feet, so yes, furnace volume is measured in cubic feet. Square feet is used for linear measurements.
A rectangle can't have volume because it is a 2D shape but if you mean a rectangular cuboid then it is 4*3*10 = 120 cubic feet
The volume of a cylinder with a 2 diameter that is 12 feet long is 37.7 cubic feet.
75 US gallons of water equates to 10.03 cubic feet.
You don't. Square feet is a measure of area but cubic meters is a measure of volume.
The middle dimension is missing from the question. If that is x then the volume is 12*x cubic feet.
If the whole container is rectangular, then its volume is 18" x 24" x 30" = 12,960 cubic inches = 7.5 cubic feet = 56.104 gallons
Any container of any shape with a volume of 6.6841 cubic feet or more will do the job. For a rectangular container, multiply the (length) x (width) x (height). If the result is 6.6841 or more in feet, (11,550 or more in inches), you're in business.
10 x 4 x 3 = 120ft3
Volume is 30 cubic feet.
12 cubic ft.
It is: 8*3*5 = 120 cubic feet
Its volume would be 343 cubic feet.
Assuming the container is full at 1500 liters, the container's volume in cubic feet will be about 53 cubic feet (52.9720005, more precisely).
You mean volume in cubic feet. The volume of a rectangular prisim is the area of the base in square feet times the altitude or height in feet. The area of the base is the length of one side in feet times the length of an adjacent side in feet.
More information is required. Is the container a cube? Or a rectangular block, for example, 20 x 10 x 5? Is it a sphere? In this case, is 20 feet the radius or the diameter? Is is a cylinder? In this case, you need radius and height.
192 cubic feet, or 7.011 cubic yards.