Hi Mahesh,
Please have a look at our video academy about volume measurements. With our friend Mark, you will learn quickly how to conduct computations in Pix4Dmapper!
Below I send you links to our literature on volume measurements - if you are interested in becoming a specialist in that area :-)
How Pix4Dmapper calculates the Volume?
How to measure Distances, Areas or Volumes
How to edit a Volume
How to remove Objects from a Stockpile for the Volume Computation
Volume list
Volume vertices
Volume calculation - editing the surface vertices
Which Base Surface is recommended for the Volume Calculation?
How to update a Volume after editing the Point Cloud
How to import a Volume into Volumes
How to export Volumes
Volume Difference of an Area Surveyed over different Time Periods
Error estimation in volume calculation
If you have any questions, ask us. We would be happy to help.
Best!