# Surface Area of Revolution By Integration Explained, Calculus Problems, Integral Formula, Examples

This calculus video tutorial explains how to find the surface area of revolution by integration. It provides plenty of examples and practice problems finding the surface area generated by a region or curve when rotating about the x axis or y terms. This video provides the two integral formulas that you need and how describes how to find the radius in terms of x or y variables. Integration techniques needed to solve problems include u-substitution , simplifying radicals, and factoring perfect square trinomials.