Estimating and Costing
In long and short wall method of estimation, the length of long wall is the centre to centre distance between the walls and

Half breadth of wall on each side
None of these
Breadth of the wall
One fourth breadth of wall on each side

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Estimating and Costing
The correct Prismoidal formula for volume is

D/3 [first area + last area + 4 Ʃ Even area + 2 Ʃ odd areas]
D/6 [first area + last area + 2 ∑ Even area + 4 ∑ odd areas]
D/3 [first area + last area + 2 Ʃ Even area + 4 Ʃ odd areas]
D [first area + last area + Ʃ Even area + 2 Ʃ odd areas]

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Estimating and Costing
Pick up the correct statement regarding the centre line method of estimating a building

Product of the centre line of the walls and area of cross-section of any item, gives total quantity of the item
The centre line length is reduced by half the layer of main wall joining the partition wall
The centre line is worked out separately for different sections of walls of a building
All of these

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