# 10 circular pieces of paper each of radius 1 cm have been cut out from a piece of paper having a shape of an equilateral triangle. What should be the minimum area of the equilateral triangle?

##### 2 Answers

#### Explanation:

The circular pieces of paper aligned in rows, like

1 over

2 over

3 over

4

configure the skeleton of an equilateral triangle.

The external equilateral triangle must have a minimum side length of

So each side must have a length of

now if

#### Explanation:

After cutting out 10 circular pieces the triangular paper will have structure as shown below