Find an equation in rectangular coordinates, and then identify the surface. 
Definitions:
Joules
A unit of energy in the International System of Units (SI), equivalent to the energy transferred to an object when a force of one newton moves it one meter in the direction of its application.
U.S. Standard Measurement
A system of measurement used primarily in the United States, including units such as inches, feet, and pounds.
Heat Energy
The form of energy that is transferred between systems or objects with different temperatures, driving changes in temperature and state of matter.
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