Answer:
natural rate of unemployment 3.6%
labour force participation rate 69.7%
Step-by-step explanation:

from the data given in the question we have
employed = 33.86 million = 33860000
unemployed = 1.27 million = 1270000
therefore we have natural rate of unemployment

labour force participation rate is calculated as
labour force participation rate

labor force = employed + unemployed labor = 33.86 +1.27 = 35.13 million
= 35130000 / 50400000 = 69.7%