In hexagonal system of planting how much more percentages of trees can be planted as compared to square method

Solution(By Examveda Team)

In the hexagonal system of planting about 15 percent of trees can be planted as compared to the square method.
In a square system, trees are planted on each corner of a square whatever may be the planting distance. This is the most commonly followed system and is very easy to lay out. The central place between four trees may be advantageously used to raise short-lived filler trees.
In the hexagonal method of planting, the trees are planted in each corner of an equilateral triangle. This way six trees form a hexagon with the seventh tree in the centre. Therefore this system is also called 'septule' as a seventh tree is accommodated in the centre of the hexagon.
Thus as compared to the square system, the hexagonal system accommodates 15% more plants. In the hexagonal system, the trees are planted in the corners of equilateral triangles. Six trees thus form a hexagon with another tree at its centre.