Answer:
please see the picture☝
Step-by-step explanation:
[tex] \frac{e}{n} = sin \: 30degrees \: = e \: = 6 \sqrt{3} [/tex]
[tex]if \: n = 10 \\ s = \frac{1}{2}h = 5 \\ [/tex]
[tex]e = \sqrt{ {n}^{2} } - {s}^{2} = \sqrt{100 - 25 } = \sqrt{75} = 5 \sqrt{3} [/tex]
[tex]if \: l = 7 \sqrt{3} [/tex]
[tex]n = 14 \\ s = \frac{1}{2} h = \frac{14}{2} [/tex]
[tex] \: \: \: \: \: \: \: \: = 7[/tex]
[tex]s = 7 \\ n = 14[/tex]