help ill give brainiest and more points

Answer:
14√3, 10.4
Step-by-step explanation:
1) x = a√3 = 14√3 30-60-90 triangle formulas
2) 18 = a√3 30-60-90 triangle formulas
a = 18/√3
x = a = 18/1.7
x = a = 10.4