A Single Point Urban Interchange moves more traffic through a smaller amount of space. Compare the Single Point to the Cloverleaf design, which takes up a much greater amount of land. The Single Point design makes it easier to build new interchanges within existing state property.
A cent is one hundredth of a dollar (in fact, the word cent is from a Latin word meaning hundred). So no, one tenth of a penny is not one hundredth of a dollar. 36 cents equals how many hundredths of dollars? 1 cent is 1 hundredth of a dollar so 36 cents are 36 hundredths of a dollar.
For example, USD (the United States dollar) is equal to 100 of its minor currency unit the  cent . So the USD has exponent 2 (10 to the power 2 is 100, which is the number of cents in a dollar).