SOLUTION: the lenght of a rectangle is 6 inhes longer than the width. If the perimeter is 40 inches , what are the dimensions of the rectangle?

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Question 611465: the lenght of a rectangle is 6 inhes longer than the width. If the perimeter is 40 inches , what are the dimensions of the rectangle?
Answer by radh(108) About Me  (Show Source):
You can put this solution on YOUR website!
We know that perimeter is 2l%2B2w=p, so let's plug what we have into this equation. 2%286%2Bw%29%2B2w=40.
Now, we just simplify: simplify_cartoon+%28+2%286%2Bw%29%2B2w=40+%29.
We end up with 4w=28. Divide the four: w=7
Now we know that the width is 7, and we plug that into the original formula. 2%286%2B7%29%2B2%287%29=40 to 2%2813%29%2B2%287%29=40
So, the width is 7 and the length is 13!