75. The cross-section notes shown below are for a ground excavation for a ground excavation for a 10-m wide roadway. Compute the cross sectional area of sta. 16 +100. 8.2 L 0 13.65 R +2.15 +3.5 +5.80 a. 58.1125 sq.m c. 52.1958 sq.m b. 55.1385 sq.m d. 54.9125 sq.m
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