Correct choice is (d) Circular, hexagonal and other geometric shapes
Explanation: By center-line method, estimate for earthwork, concrete work or brick work for all walls of the building can be done at a time. If there are junctions, it needs to be carefully calculated deducting the widths. By long wall and short wall method, each wall is estimated separately. In centerline method, it can be prepared quickly eliminating lengthy mathematical calculations. In Center-line method, estimate can’t be physically measured at site where as it can be done for Long wall short wall method. Center-line method is preferred for preparing estimates and long wall short wall method is preferred for entering measurements in measurement book.
