#6) 232/15 = 15.4666
sqrt(15.4666) = 3.932
3.932 * 3.932 x 15 = 231.91
so edge is approximately 3.9 m
#7) 232/2 = 116
sqrt(116)=10.770
10.77 * 10.77 * 2 = 231.99
so edge is approximately 10.8 m
