If it is a cube (basically a square) or a rectangular prism multiply the top, the length, and the base.
Volume = Length * Width * Height
the three dimensions needed to find the area of a rectangular solid object are: Height, Length and Width.
Volume of any prism = cross-section area times length
A rectangular prism has a volume that can be found by multiplying the object's length width and height. To obtain the mass one must also know the density of the object and multiply that by the volume.
length, width and height (:
Height x Weight x Height
Height x Weight x Height
Height x Weight x Height
If you know the density of the rectangular body you can find the volume and the plug it into this equation mass= (density)*(volume) If you have the means you can just submerge the body completely in water and find the volume of the water displaced that will be the mass as waters density is 1 g/cm^3
Multiply base area x height.
a square is a 2 dimension object. we can not find volume of a 2-D object... if u are asking that of a cube with equal sides, then simply find (a^3) where a is side of the cube.
The formula for calculating the volume of a cuboid is width x length x height