If someone walks along the outside of the garden from point a to point B what percentage of the gardens border with they will have walked around round your answer to the nearest whole percentage

In the graph, we can see that the circle is divided into four pieces, by two axes which is the diameters. When an angle is a central angle, the opposed arc is the same value. Since angle m
So, arc AB = 90º - arc EA ; 90º - 50º= 40º
So, which percentage of the garden's border is AB?
40º/360º = 20/180º = 10/90º = 1/9 = 0.111 x 100% = 11.1% = 11%
So, the person has walked 11% of the whole garden