The answer would most likely be joking
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 
Heart Attack is a real emergency
My second choice is Blood
<span>B. Primitive life-forms, such as molds or yeasts, that cannot make their own food.
Please mark brainliest if you liked my answer!</span>
Answer:
Should contain nutrients that you need to be healthy