SOLUTION: The width of a rectangle is 4 less than twice its length. If the area of the rectangle is 57 cm, what is the length of the diagonal?
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Question 403547: The width of a rectangle is 4 less than twice its length. If the area of the rectangle is 57 cm, what is the length of the diagonal?
Found 2 solutions by Nada, MathLover1:
Answer by Nada(11) (Show Source): You can put this solution on YOUR website!
Area = Width x Length
57 = W x L
W= 2L-4
57 = 2L-4 x L
57 = 2L-4L
57 = 2L
L = 57/2 = 28.5
To get W :
57 = W x 28.5
W = 57/28.5 = 2
To check answer : 28.5 x 2 = 57 ( answer is correct)
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
The width, ,
The length
...=>...
If the area of the rectangle is ,
what is the length of the diagonal
....we don't need other root, width cannot be negative
........the length of the diagonal
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