Did I do this problem right ???
I Believe You are correct.
Your answers are wrong.Use pythagoras theorem to solve for gg² + 120² = 130²g² = 130² - 120²g² = 16900 - 14400 = 2500g = √2500 = 50a = g = 50sin 30 = a/h1/2 = 50/hh = 50*2 = 100