Answer:
????
Step-by-step explanation:
??????????????????
Thanks for free points :)
Answer:
The rate of change is
ft^(2)/min
Step-by-step explanation:
The area of a circle is given by the following equation:

To solve this question, we have to realize the implicit differentiation in function of t. We have two variables, A and r. So

We have that:
.
We want to find 
So


Since the area is in square feet, the rate of change is in ft^(2)/min.
So the rate of change is
ft^(2)/min
Answer:
choice 3) acute and equilateral
Step-by-step explanation:
1/3 is greater than 1/5 and 1/4.