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The trapezoidal and prismoidal formulae were derived based on the assumption that end sections are in parallel planes.

The trapezoidal and prismoidal formulae were derived based on the assumption that end sections are in parallel planes. Correct Answer True

The prismoidal and the trapezoidal formulae were derived on the assumption that the end sections are in parallel planes. So, the centre line of an embankment is curved in plan and it is common to calculate the volume as if the end sections were in parallel planes and then apply the correction for curvature.

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