A circular column section is generally not used in actual practice because________?

Setting out the alignments of sewers may start from________?

Strength of concrete increases with________?

The angle of projection at which the horizontal range and maximum height of a projectile are equal to________?

Duopsony is a market situation where there is/are________?

If the design speed is V kmph and deviation angle is N radians, then the total length of a valley curve in meters is given by the expression________?