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The length of a rectangle is 11 centimeters less than five times its width. Its area is 12 square centimeters. Find the dimensions of the rectangle.
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4 votes
The length of a rectangle is 11 centimeters less than five times its width. Its area is 12 square centimeters. Find the dimensions of the rectangle.

User Hesam Faridmehr
by
5.1k points

2 Answers

3 votes
Length- 5x-11
Width- 5x

Length*Width=Area
(5x-11)(5x)=12
25x^2-55x-12=0
D= 3025+1200=4225
(√4225=65)
x=(65+55)/2=2,4
Length =(5*2,4)-11=1
Width=(5*2,4)=12
User Ssawchenko
by
4.9k points
7 votes

Answer:22 centimeters

Explanation:

User TomG
by
4.9k points
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