The volume of a rectangle (or any other 2D object) is always zero. An object needs to be 3D to have volume.
A = Area V = Volume l = length w = width h = height A rectangle is 2D and has AREA not volume. A = (l)(w) A rectangular prism is 3D and has VOLUME. V = (l)(w)(h)
There is no such thing as a 3D triangle.
In order to find the perimeter of a 3D rectangle you must gather the lengths of the known sides, calculate the missing rectangular values, and use the formula for perimeter.
Length times width times height(length * width * height or L * W * H) but only if it is like a box or cube of some sort which I believe it is because you said "3D". A 2 dimensional or 2D rectangle can not have a volume.
A 3d rectangle, or a cuboid, has eight corners.
Rectangles have area. 50 square cm in this case.
A rectangle is a two dimensional shape, so it doesn't have volume. If you wanted to calculate the area of the rectangle, you simply multiply the length by the width.If, however, you wanted to calculate the volume of a 3D rectangle (also known as a cuboid), you would multiply the length, width, and height together.
Volume = area of cross-section*length
Well it depends on what kind of 3d shape it is. There is a formula to find the volume of each 3d shape. The main formula for volume is Bxh. (Big B multiplied by the height.) Bxh means the area of the base times the height.
A three-dimensional rectangle is a prism.