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 
Answer:
i would say A
Explanation:
please tell me if i was wrong ... hoped i helped:)
Pantone is a word to describe a tank in your eye of which you see color! And if the structure in your eye can’t see certain colors they blend them cause color blindness