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1. |
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. | ⅓ × (b - rd)²/(r - s) |
B. | ⅓ × (b - rd)²/(r + s) |
C. | ½ × (b + rd)²/(r - s) |
D. | ⅓ × (b - rd)²/(s - r) |
Answer» B. ⅓ × (b - rd)²/(r + s) | |