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
<u>Answer:</u>
The factor that contributes to aging is: A Cells stop dividing after 50 divisions.
<u>Explanation:</u>
- Normally after 40 to 50 divisions the cells stops dividing because they had already lost too much DNA for other divisions.
- So they eventually die, making the appearance like an aged person in any individual.
- As DNA is copied in every cell division process, they tend to loose small part of telomeres in each transfer process.
- Hence, after 50 divisions these cells fails to divide resulting in aging.
<span>When an individual is more than a couple of meters underwater, the air pressure in the lungs is greater than the air pressure at the waters surface. If a snorkel were used, it would move the air from the lungs to the surface, making it very difficult to breath
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