Find the area of washers whose external and internal diameter are 15cm and 13cm

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

A50% increase followed by 33 1/2% decrease

See attachment below and find the equivalent of tan(∠qsr)