no, replace liner
Yes, but new bead receptor will need to be installed. It is better to remove and install the new liner over a good pool bottom or a resurfaced pool bottom.
That normally depends on where you are getting the liner from, but in most cases, you measure the pool diameter and actual pool wall height. When you order the liner, let the liner manufacturer know the liner is for an above-ground pool with an overlap liner. The liner manufacturer will then make the pool wall enough longer to allow several inches of liner material to fold over the top of the pool wall and anchor it in place with the liner locking strips.
You should never completely drain an above ground pool. The chemicals in the vinyl liner that allow it to stretch when originally installed do not last. If you drain the water, the liner will shrink and when you refill the pool there is a good chance that instead of stretching back the liner will rip instead. NEVER drain your pool.
the answer is 13,825 gallons... I just had one installed and this info is in the liner fact sheet. hope this helps.
There are many places where one can buy a pool liner. One can buy a pool liner at popular on the web sources such as Liner World, USA Pool Pros, and National Pool Wholesalers.
form_title= Pool Liner form_header= Replace or install a liner for your pool. Do you need to replace an existing liner?*= () Yes () No Is it an in-ground or above-ground pool?*= () In Ground () Above Ground What is the size of your pool?*= _ 
The pool liner pad is placed underneath the pool liner to prevent items from cutting through the liner. If the liner is already leaking, the liner pad will not stop the leak.
by taking the liner away!
I have a 27 foot decagon (in ground pool) and it cost me $1500.00.