hard? no

like this : + and then one cut through the side

I drew my answer.

View attached image.

A puzzle? I highly doubt that.

How about this: cut with 2 slices (+), then put the quarters on each other, then cut the pile in half?

Google helped my finding the answer:
http://www.programmerinterview.com/index.php/puzzles/birthday-cake-8-pieces/

Now I demand a GA :P

I'd eat it whole. No sharing.

I'd cut it 4 times but tell everyone that I only cut it thrice.

Are you using SG to solve your schoold tasks? Seriously, py attention to your teacher -.-

Well, it takes 2 minutes if you actually think about it for once.

View attached image.

I'm simple man: see the puzzle - expect the GA

Cut in half. Put one part on the other part. Cut in half. Put all the parts one above the other. Cut in half. Enjoy your 8 feet tall cake :)

you slice like this + then turn it like 30° then a second slice like this +

I never had a cake...

btw, this isn't a puzzle, change it to off-topic.

Where is GA? :D

it's a cake .. it's 3D.. so cut it Horizontally into to Cake with half of the height.. then a simple X cut all the way though from the top accross both pieces.. it's a simple 8..

Get a protractor and cut every 45 degrees all the way across the cake... three times. :V
Cut once, measure 45 degrees, cut again, measure 45 degrees, cut a third time.

I'd start baking a cake like this:

View attached image.