A cylinder
because the front is not pointed
Not every relation is a function. But every function is a relation. Function is just a part of relation.
The cubic function.
Range
The main function of a megaphone is to amplify voice/sound towards a targeted direction.
Megaphone is a noun.
I'll forego the megaphone. Your megaphone could use a fresh coat of paint.
The cheerleader used a megaphone to amplify her voice during the pep rally.
Megaphone - band - was created in 2004.
Megaphone Team was created in 2003.
I used a megaphone to get the students attention.
The Braindead Megaphone has 272 pages.
A megaphone is something cheerleaders speak into to be louder!
The Braindead Megaphone was created on 2007-09-04.
Operation Megaphone happened on 2000-07-30.
The megaphone was invented in 1878 by Thomas Edison