Washington V.

asked • 02/02/23

The width of a rectangle is 4 less than twice its length. If the area of the rectangle is 184 cm 2 , what is the length of the diagonal? The length of the diagonal is cm.

just need some help please

1 Expert Answer

By:

Bradford T. answered • 02/02/23

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MS in Electrical Engineering with 40+ years as an Engineer

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Area = width×length = WL=184


W=2L-4


The problem is asking for the length of the diagonal.


Diagonal = D = √(W2+L2)


So you need to find W and L and then use those values to evaluate D.


(2L-4)L= 184

2L2-4L-184 =0


Use the quadratic formula to find L and then W. Then find D.


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