Solution:- the figure given in the question are as follows:
surface area of dam downstream side=BD*(1035-35)
where, BD=CD/sin60=100/sin60
BD=115.47 ft
surface area of dam in downstream face (side)(A)=115.47*1000=115.47*10^3 ft^2
surface area of dam in downstream face (side)(A)=115.47*10^3 ft^2 , (this area is near by 117*10^3 ft^2)
exact surface area of dam in downstream face (side)(A)=115.47*10^3 ft^2
[Ans]
QUESTION 40 A larpe curved Dam is created by rotating the triangle shape BCD through an...