SOLUTION: A rectangle has perimeter 40 feet and an area of 84 square feet. Find the dimensions of the rectangle assuming the width is smaller than the length.
Thank you for any help. Ple
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Question 1093889: A rectangle has perimeter 40 feet and an area of 84 square feet. Find the dimensions of the rectangle assuming the width is smaller than the length.
Thank you for any help. Please try to make things as clear as you possible can. Again thank you!!! I really appreciate it!
Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.
The sum "Length + Width" is 20.
Their product is 84.
Find the pair of factors to 84 that sum up to 20.
Do it mentally in 7 seconds.
Or solve the quadratic equation
x*(20-x) = 84 . . . .
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