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The surface area of many threedimensional objects, such as a cylinder, a square
pyramid, and a cone can be represented as a binomial expression. For example,
a manufactor can determine the amount of aluminum needed to produce a cylindrical
tin can by evaluating the binomial expression 2(pi)r^{2} + 2(pi)rh,
where r is the radius of the circular base and h is the height
of the can (Note that 2(pi)r^{2} gives us the surface area of the top and bottom of the can, and 2(pi)rh gives us the surface area of the rest of the can).
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Salaries for waitstaff at restaurants can be represented by binomial expressions.
A table server will receive $4 per hour for working and any additional money
made on tips. Therefore, the binomial expression 4h + t is the total amount
of money earned after h hours of work and $t in tips.
