For the following questions answer them individually
The annual instalment (I) of the sinking funds (S) over n years, at i rate of interest may be calculated from the formula
The plan of a building is in the form of a rectangle with centre line dimensions of the outer walls as $$ 10.3 m \times 15.3 m.$$ The thickness of the walls is superstructure is 0.3 m. Then its carpet area is
The damp proof course (D.P.C) of uniform thickness in a building having walls of different widths is measured in
The value of thge property at the end of its useful life (without being dismentled) is known as