Find the surface area of a cylinder with radius 2.5 cm and height of 7.3 cm.
1 answer:
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We need to solve the following system by substituition:
To solve by substituition means that we need to isolate one variable in one of the equations and replace one expression with the other. This is done below:
Then we need to replace the value of "x" in any of the two equations.
The solution is (-3,-5).