how can you cut a cake into 8 peices only using 3 cuts?

Question

for my math class i have to cut a cake into 9 peices using only 3 cuts. can some one please help?

sorry it was 8 peices

thanks, i realize that its a 3 demensional object, and it can be cut in height

Answer 1

You have had some good correct answers, but if you had thought about it, you would have realised that the assignment is not about cutting cake but understanding that 2 cubed is 8. Each cut dissects, and you have a three dimensional object to cut (the cake). So if you cut across the length, the width and the height, you will have eight pieces (2^3=8).

Answer 2

make up ur mind 8 or 9 ?

if 8 then: cut a usual cross sign, thats 2 cuts and 4 peices, then a cut through the height of the cake, gives u 8 peices (the 4 peices become 8 peices with height \ 2)

Answer 3

ou have had some good ideal solutions, yet in case you had idea about it, you would possibly want to have realised that the duty isn't about reducing cake yet understand-how that 2 cubed is 8. each and every decrease dissects, and look at were given a three dimensional merchandise to diminish (the cake). So in case you decrease in the course of the size, the width and the height, you may have 8 products (2^3=8).

Answer 4

1st cut:- Horizontal through the cake to produce a top and a bottom layer.
2nd cut:- Down through the centre to make 4 'D' shaped pieces.
3rd cut:- Down through the centre, after rotating the cake so the 3rd cut forms a cross with the second cut, thus cutting the 4 pieces in half.
This will give you 8 pieces with only 3 cuts.

Answer 5

good answers above but a little boring. I prefer:

two curves, one from the left, one from the right which intersect each other. Then cut straight through the 2 points where the curves cross. Voila, 4 wedges, 2 semi-cicles and 2 crazy bits o cake.

nice

2*2*2 will probably get you the A though.

Answer 6

assuming it is 8 pieces, it's a classic

do one cut, you get two pieces. do a second cut perpendicular to the first, you now have four pieces.

so now what? do not a vertical cut, but a horizontal one, at mid-height of the cake. You have your 8 pieces.

easy

Answer 7

Make the first two cuts in the form of an X, centered over the middle of the cake. Then make a circle cut, with the point of the X being the middle of the circle. This would yield you 8 pieces.

Answer 8

Cut the cake into quarters (i.e. 2 cuts in a cross).

Next slice the cake horizontally to form a top and a bottom layer (i.e. 1 cut horizontally).

Answer 9

Why the hell are you taking a cake into maths? I would personally just cut it into quarters using 2 cuts and then stab the teacher for the third for asking such a bloody stupid question

Answer 10

Cut through the middle horizontally and then make two slices at an X vertically.