I learned to play piano as a child, but probably couldn't find middle C now as an adult.
I do not play, the piano is a music instrument invented in Italy around 1700
How many strings does a piano have?
No idea? its played using a keyboard row of keys
I know it has 88  keys.  Maybe there is one string for every key?  I'm not sure.
The acoustic piano usually has a wooden box around it
Acoustic, meaning it doesn't plug in, like the electronic keyboards?
Similar to acoustic guitar does not plug in wooden case 
Ah.  That makes sense.  Joplin is my favorite piano player.  Do you have a favorite piano player?
Elton John, its cool the way the strings are struck by hammers