Find the centroid of the region bounded by the given curves. 
Definitions:
Declining-Balance Method
A method of accelerated depreciation where an asset loses value at a faster rate in its early years of use.
Revenue Expenditures
Expenditures that are immediately charged against revenues as an expense.
Ordinary Repairs
Expenditures to maintain the operating efficiency and productive life of the unit.
Capital Expenditures
Capital employed by a business to buy or enhance tangible assets like land, factories, or machinery to boost long-term business activities.
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