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