SOLUTION: A rectangle has a perimeter of 42 centimeters. One of its sides is 11 centimeters. What are the demensions of the reectangle?

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Question 769461: A rectangle has a perimeter of 42 centimeters. One of its sides is 11 centimeters. What are the demensions of the reectangle?

Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
If the lengths of the sides of a rectangle
are x and y,
perimeter=2x%2B2y
In the rectangle of the problem, highlight%28y=11cm%29 and perimeter=42cm
42cm=2x%2B2%2A11cm-->42cm=2x%2B22cm-->42cm-22cm=2x-->20cm=2x-->x=20cm%2F2-->highlight%28x=10cm%29
The dimensions of the rectangle are 11cm by 10cm.