So, I need more details, is 3.14 the radius or is 100 the radius. Or is it the diameter???
Answer:
Therefore the rate of growth of the tree is 33 cm/ yr.
Step-by-step explanation:
Given that,
The height of the tree is
H= 210 +33t
Here H represent the height of tree in cm and t is time in year.
The rate of growth is the first order derivative of the H with respect to time.
i.e The rate of growth 
∴H= 210 +33t
Differentiating with respect to t


Therefore the rate of growth of the tree is 33 cm/ yr.
Answer:
Tank A is filling quicker
Step-by-step explanation:
The slope of line A is larger and going up faster, that tells you tank A is filling up faster than Tank B