Estimating and Costing
If the formation level of a highway has a uniform gradient for a particular length, and the ground is also having a longitudinal slope, the earthwork may be calculated by

Mid-section formula
Prismoidal formula
All of these
Trapezoidal formula

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Estimating and Costing
In the mid-section formula

All of these
The area of mid-sections is calculated by using mean depth
The volume of the earth work is calculated by multiplying the mid-section area by the distance between the two original sections
The mean depth is the average of depths of two consecutive sections

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