SOLUTION: The perimeter of a rectangle is 42cm.The width is 7cm less than the length. Find the dimensions of the rectangle
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Question 1044291: The perimeter of a rectangle is 42cm.The width is 7cm less than the length. Find the dimensions of the rectangle
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
2L+2W = 42
W = L-7 Substitute in th efirst equation
2L+2(L-7) = 42
2L+2L-14 = 42
4L = 56
L = 14
--------------------------
Check:
L = 14
W = 14-7 = 7
Perimeter: 2(14)+2(7) = 28+14 = 42 Correct.
:
John
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