The ground surface slopes 1 in 50 along a proposed railway embankment 150 m in length. The height of the embankment at zero chainage is 0.5 m, the width is 11 m and side slopes 2 : 1. If the falling gradient of the embankment is 1 in 150, the quantity of the earthwork calculated by Prismoidal formula, is
A. 3250 m3
B. 3225 m3
C. 3275 m3
D. 3300 m3
Answer: Option B
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Solution plz...
3250 correct