Find
a)  the exact length of an ideal rectangle with width W = 5 by solving

b)  the approximate length of an ideal rectangle with width W = 5 by using

a)
To Find:
The exact length of an ideal rectangle.
According to the quadratic formula, the solutions of ax^{2} + bx + c = 0 are given by
Calculation:
Consider,
Use the quadratic formula in
b)
To Find:
The approximate length of an ideal rectangle.
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