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)
No explanation is available for this question!