The answers are:
1) 
2) 
3) 
The explanation for this answer is shown below.
1. To solve this problem you must apply the following proccedure:
2. You have the function 
3. You must switch
and
and then solve for
:

4. Finally, you obtain:

Answer:

Step-by-step explanation:
V=Tr^2h
V / T = r^2 h
V / Th = r^2
√V / Th

Answer:
7
Step-by-step explanation:
Total sides = 6 *hexagon* (6 sided shape)
Divide the total perimeter by the many number of sides:
42(total) divided by 6(6 sides in total) = 7.
Therefore AB is 7
Answer:
Step-by-step explanation:
a) = 15
b) = 36
c) ???????