Assuming the duct you have in mind is in a 3d shape (length, width, and depth) Your answer will be in a cubic form.
Example: Say it is 2 feet long 1 foot wide and 1 foot tall, the area will be 2 cubic feet.
Measurement of side one * side 2 * side 3 = area.
Area of round duct is pi times radius squared.
Area = length * width
It is length * width.
The base of a rectangular prism is a rectangle. The area of a rectangle is length times width.
Area of a rectangle is length times width.
Area of round duct is pi times radius squared.
Area = length * width
It is length * width.
surface area of a rectangular prism is the formula: 2lw+2wh+2lh
Volume of rectangular prism = area of base x height
The base of a rectangular prism is a rectangle. The area of a rectangle is length times width.
Area of a rectangle is length times width.
Area in square units = length*width
length x width
time width by length
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Squared. When you find surface area, you are only finding the area of the shapes that make up the three-denominational shape.