Q. The cross -section of a road partly in banking and partly in cutting is shown in the given figure. The area of the shaded portion is
A. (b – rd)²/(r – s)
B. (b – rd)²/(r + s)
C. ½ × (b + rd)²/(r – s)
D. (b – rd)²/(s – r)
Answer: (b – rd)²/(r – s)
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