Answer:
The lcm is 84
Step-by-step explanation:
3: 3,6,9,12,15,18,21,24,27,30,33,36,39,41,44,47.........84
4: 4,8,12,16,20,24,28,32,36,40,44........84
7: 7,14,21,28,35,42.......84
Let me get the problem
The volume is 3141.59
Use the formula V=3.14r2h/3
exponent
In 2^4, 4 is the "exponent."
Area
Using the perimeter will only give you the measurements of the outside. But since you need to fill the harbor with water, you need the depth as well.