You could make a small (easily repaired) leak and watch it for the amount of time you need to conclude what you need to.
Answer:
It's the first one I think
Answer:I think the answer is 5/12.
Step-by-step explanation:
Sorry if I am wrong. :) but it should be correct.
Answer:
She will need approximate
of plastic border
Step-by-step explanation:
we know that
The circumference of a circle is equal to

In this problem we have

substitute
----> exact value of the length of plastic border
assume

---> approximate value of the length of plastic border