Question 212392
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The perimeter of a rectangle is given by:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ P = 2l + 2w]


If the width is fixed at 10 cm, and the perimeter must be greater than 78 cm, then you can substitute thus:



*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 2l + 2(10)\ >\ 78]


Just solve the inequality for *[tex \Large l]




John
*[tex \LARGE e^{i\pi} + 1 = 0]
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