Calculating the volume of a tube essentially involves the same formula as a cylinder volumepr2h except that in this case the diameter is used rather than the radius and length is used rather than height. The outside surface area of a box will be given as 2 h W 2 h L 2 W L Where l Length. The Volume of a box can be found by just multiplying all the three inputs h w l together.
Volume Width Height Depth.
L is the length. V box 40 inches 3. The formula is then volume box width x length x height. To calculate the volume of a box or rectangular tank you need three dimensions.