SOLUTION: Suppose that a rectangle has an area of 45 square meters. Express the perimeter P as a function of the length x of one of the sides.

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Question 254503: Suppose that a rectangle has an area of 45 square meters. Express the perimeter P as a function of the length x of one of the sides.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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Suppose that a rectangle has an area of 45 square meters.
Express the perimeter P as a function of the length x of one of the sides.
:
Let x = length
Let y = width
:
The area equation:
x*y = 45 sq/m
y = 45%2Fxm
:
P = 2x + 2y
Substitute 45%2Fx for y
:
P(x) = 2x + 2(45%2Fx)