we know that
the surface area of the top of the water
is calculated with the formula of the area of a circle

Step 1
Find the radius of the water tank in the middle of the tank
by proportion

so
For h=5 m
the radius is equal to r=1.5 m
Step 2
Find the surface area


therefore
the answer is
the surface area of the top of the water is 
A person is considered obese if his/her body weight is 20% over than his/her ideal body weight.
The charge nurse should try to remain calm and not take it personally. She should try to listen carefully to the client's wife and actively sympathize with her. She should gracefully apologize, thank her and then take the problem up with the nursing staff to see where the problem was.and follow up with the client or client's wife.