Use the arc length formula to find the length of the curve. 
Definitions:
Income Inequality
The disparate sharing of income between households or individuals within an economic structure.
Highly Educated Workers
Highly educated workers are individuals who have attained a high level of education, often including university degrees, and possess advanced knowledge and skills in their fields.
Median Income
The middle income in a list of incomes, where half of the incomes are higher and half are lower.
Gini Coefficient
A measure of income inequality within a population, ranging from 0 (perfect equality) to 1 (perfect inequality).
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