[ Cutting (other).]

What is the maximum number of pieces into which a round pancake can be divided using three straight cuts?

#
Recall problem 11.

## Solution

If from three lines each pair intersects inside the pancake, it will result in 7 pieces (see Fig. 11.4). If, however, any two of these lines are parallel or intersect outside the pancake, there will be fewer pieces.

## Answer

7 pieces.