doubt: stock related

SIVASIVA (FCA, Future CA) (4935 Points)

24 June 2010  

One of our office client throws all the scrap of metal stocks in a separate place in a corner of their Factory.  The area which the Scrap occupies is around 1/4 of an Acre.  They had just bunched. 

The question is while verifying these items, we are unable to measure and we have taken an Approximate figure only.  Whether this is correct?

Or is there any other way to calculate the Scrap .