Question 309283
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ w\ =\ \frac{3}{4}l]


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


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 2l\ +\ 2\left(\frac{3}{4}l\right)\ =\ 420]


Just solve for *[tex \Large l] then multiply by *[tex \Large \frac{3}{4}] to find *[tex \Large w]



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