### Brain Teasers

# Birthday Cake

Suppose you are given a birthday cake which is round in shape (like a perfect circle) and you are asked to make eight equal pieces out of it by using a knife only three times. How would you proceed?

### Answer

Use the knife a first time to cut it across one of its diameters. Then use the knife a second time to cut across another diameter and you will have four equal parts. Use the knife a third time to cut the cake horizontally, half way across its thickness, and you have the eight equal pieces!!!Hide Answer Show Answer

## What Next?

**Solve a Similar Brain Teaser...**

Or, get a random brain teaser.

If you become a registered user you can vote on this brain teaser, keep track of

which ones you have seen, and even make your own.

## Follow Braingle!