Answer:
27 lb/sq.in
Step-by-step explanation:
If pressure is directly proportional to depth d then it can be mathematically written as
P=kd where k is constant of proportionality
To find "k" we substitute value of p = 3.6 lb/in2 and d = 8 feet as given in problem
3.6=k8
=>k = 3.6/8 = 0.45
k=0.45
Thus relation of pressure and depth can be written as
p=(0.45)d
If the depth is 6ft,
p=(0.45)(6)=27 lb/sq.in
Thus pressure is 27 lb/sq.in when the depth is 6 feet.