Answer:

Step-by-step explanation:

Answer: 0.965
Step-by-step explanation:
Given : Water use in the summer is normally distributed with


Let X be the random variable that represents the quantity of water required on a particular day.
Z-score : 

Now, the probability that a day requires more water than is stored in city reservoirs is given by:-

We can see that on comparing the above value to the given P(X > 350)= 1 - P(Z < b) , we get the value of b is 0.965.
A^2+b^2=c^2
160^2+160^2 = 51,200
Square root of that is <span>226.27416998</span>
I assume the answer is 180 but u have not put a question