SOLUTION: the length of a rectangle is 3cm more than twice it's width. If it's perimeter is 30cm. What is the area?

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Question 627555: the length of a rectangle is 3cm more than twice it's width. If it's perimeter is 30cm. What is the area?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,



the length of a rectangle is 3cm more than twice it's widthhighlight%28x%29.

 If it's perimeter is 30cm.

 2l+%2B+2w+=+30

     l + w = 15cm

  (2x+3) + x = 15

         3x = 12cm

          x = 4cm, the width, the length is 11cm   || 2%2A4+%2B+3

A+=+l%2Aw+=+4cm%2A11cm+=+44cm%5E2