1. Cut it in half - there are 2 halves.
2. Cut one of these in half - there are two quarter and one half.
3. Cut the other in half - there are four quarters.
4. Stack them and cut in half - there are eight eighths.
5. Stack them and cut in half - there are sixteen pieces.
Cuts 2 and 3 could have been combined, by stacking, to do it all in 4 cuts.
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Well, isn't that a fun little puzzle! To cut a ball into 9 pieces with just 3 cuts, you can start by making two perpendicular cuts to divide the ball into quarters. Then, you can make a third cut horizontally through the middle of the ball. This will give you 9 equal pieces, each with a slice of the ball. It's all about seeing things from different angles and finding creative solutions!
Cut a pizza into 2 using one straight cut. Stack the pieces and make a straight cut: you now have 22 = 4 pieces from 2 cuts. Stack these and make a straight cut: you now have 23 = 8 pieces from 3 cuts. Continue. After 7 cuts you can have 27 = 128 pieces. You can reduce the number of pieces to 29 if, after the fourth cut, you stack and cut only 11 pieces and thereafter cut just one each time. There are other options which give the same result.
To divide a sphere in 8 equal parts in three steps: * Cut a plane through the most circular part of the sphere - this cuts the sphere in half * Cut a plane perpendicular to the first plane with the lengths aligned - this cuts the sphere in four pieces * Cut a plane perpendicular to the first plane at a right angle to the second plane - this cuts the sphere into eight pieces
If no cut intersects any previous cuts, then you can just slice it into 14 pieces.
2 horizontal cuts and 3 vertical cuts OR 3 horizontal cuts and 2 vertical cuts