I have never made a sheet cake. I'm doing a VCR cake for a friend and thought I'd make a half sheet cake with 2layers but I need it to feed at least 50 people. Will this be big enough?

Please copy this for your future reference:

http://www.wilton.com/cakes/cake-cutting-guides/party-cake-cutting-guide.cfm

and

http://www.wilton.com/cakes/making-cakes/baking-wedding-cake-2-inch-pans.cfm

I like to say that a sheet cake feeds 50 people